diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
index 82abc63ef..4f5957d06 100644
--- a/.idea/jarRepositories.xml
+++ b/.idea/jarRepositories.xml
@@ -46,5 +46,10 @@
       <option name="name" value="gaea" />
       <option name="url" value="file:$PROJECT_DIR$/../Gaea/repo" />
     </remote-repository>
+    <remote-repository>
+      <option name="id" value="gaea.local" />
+      <option name="name" value="gaea-local" />
+      <option name="url" value="file:$PROJECT_DIR$/../Gaea/repo" />
+    </remote-repository>
   </component>
 </project>
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index db584e1d5..c2de2c86e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -65,7 +65,7 @@
         </repository>
         <repository>
             <id>gaea.local</id>
-            <name>gaea</name>
+            <name>gaea-local</name>
             <url>file:/home/dfsek/Documents/Gaea/repo</url>
         </repository>
         <repository>
@@ -95,7 +95,7 @@
         <dependency>
             <groupId>org.polydev</groupId>
             <artifactId>gaea</artifactId>
-            <version>1.10.5</version>
+            <version>1.10.17</version>
         </dependency>
         <dependency>
             <groupId>javax.vecmath</groupId>
diff --git a/src/main/java/com/dfsek/terra/TerraProfiler.java b/src/main/java/com/dfsek/terra/TerraProfiler.java
index 7d78eadd6..ddf534453 100644
--- a/src/main/java/com/dfsek/terra/TerraProfiler.java
+++ b/src/main/java/com/dfsek/terra/TerraProfiler.java
@@ -16,7 +16,7 @@ public class TerraProfiler extends WorldProfiler {
         this.addMeasurement(new Measurement(2500000, DataType.PERIOD_MILLISECONDS), "TotalChunkGenTime")
                 .addMeasurement(new Measurement(2500000, DataType.PERIOD_MILLISECONDS), "ChunkBaseGenTime")
                 .addMeasurement(new Measurement(2000000, DataType.PERIOD_MILLISECONDS), "BiomeSetTime")
-                .addMeasurement(new Measurement(25000000, DataType.PERIOD_NANOSECONDS), "TreeGenTime")
+                .addMeasurement(new Measurement(25000000, DataType.PERIOD_MILLISECONDS), "TreeGenTime")
                 .addMeasurement(new Measurement(1500000, DataType.PERIOD_MILLISECONDS), "FloraTime")
                 .addMeasurement(new Measurement(1500000, DataType.PERIOD_MILLISECONDS), "CaveTime")
                 .addMeasurement(new Measurement(1500000, DataType.PERIOD_MILLISECONDS), "CaveBlockUpdate");
diff --git a/src/main/java/com/dfsek/terra/carving/UserDefinedCarver.java b/src/main/java/com/dfsek/terra/carving/UserDefinedCarver.java
index d3e19f4b8..17064be9c 100644
--- a/src/main/java/com/dfsek/terra/carving/UserDefinedCarver.java
+++ b/src/main/java/com/dfsek/terra/carving/UserDefinedCarver.java
@@ -18,7 +18,9 @@ public class UserDefinedCarver extends Carver {
     private final MaxMin length;
     private final MaxMin radius;
     private final int hash;
-    public UserDefinedCarver(MaxMin height, MaxMin radius, MaxMin length, double[] start, double[] mutate, double[] radiusMultiplier, int hash) {
+    private final int topCut;
+    private final int bottomCut;
+    public UserDefinedCarver(MaxMin height, MaxMin radius, MaxMin length, double[] start, double[] mutate, double[] radiusMultiplier, int hash, int topCut, int bottomCut) {
         super(height.getMin(), height.getMax());
         this.radius = radius;
         this.length = length;
@@ -26,12 +28,14 @@ public class UserDefinedCarver extends Carver {
         this.mutate = mutate;
         this.radiusMultiplier = radiusMultiplier;
         this.hash = hash;
+        this.topCut = topCut;
+        this.bottomCut = bottomCut;
     }
 
     @Override
     public Worm getWorm(long l, Vector vector) {
         Random r = new Random(l+hash);
-        return new UserDefinedWorm(length.get(r), r, vector, radius.getMax());
+        return new UserDefinedWorm(length.get(r), r, vector, radius.getMax(), topCut, bottomCut);
     }
 
     @Override
@@ -43,8 +47,10 @@ public class UserDefinedCarver extends Carver {
         private final Vector direction;
         private final int maxRad;
         private double runningRadius;
-        public UserDefinedWorm(int length, Random r, Vector origin, int maxRad) {
+        public UserDefinedWorm(int length, Random r, Vector origin, int maxRad, int topCut, int bottomCut) {
             super(length, r, origin);
+            super.setTopCut(topCut);
+            super.setBottomCut(bottomCut);
             runningRadius = radius.get(r);
             this.maxRad = maxRad;
             direction = new Vector((r.nextDouble()-0.5D)*start[0], (r.nextDouble()-0.5D)*start[1], (r.nextDouble()-0.5D)*start[2]).normalize();
diff --git a/src/main/java/com/dfsek/terra/config/WorldConfig.java b/src/main/java/com/dfsek/terra/config/WorldConfig.java
index 16fb0ff26..14322ba58 100644
--- a/src/main/java/com/dfsek/terra/config/WorldConfig.java
+++ b/src/main/java/com/dfsek/terra/config/WorldConfig.java
@@ -71,8 +71,8 @@ public class WorldConfig {
             // Get values from config.
             seaLevel = config.getInt("sea-level", 63);
             zoneFreq = 1f/config.getInt("frequencies.zone", 1536);
-            freq1 = 1f/config.getInt("frequencies.grid-1", 256);
-            freq2 = 1f/config.getInt("frequencies.grid-2", 512);
+            freq1 = 1f/config.getInt("frequencies.grid-x", 256);
+            freq2 = 1f/config.getInt("frequencies.grid-z", 512);
             fromImage = config.getBoolean("image.use-image", false);
 
             // Load image stuff
diff --git a/src/main/java/com/dfsek/terra/config/genconfig/CarverConfig.java b/src/main/java/com/dfsek/terra/config/genconfig/CarverConfig.java
index 1367b4199..b620ef9ea 100644
--- a/src/main/java/com/dfsek/terra/config/genconfig/CarverConfig.java
+++ b/src/main/java/com/dfsek/terra/config/genconfig/CarverConfig.java
@@ -28,12 +28,18 @@ public class CarverConfig extends TerraConfigObject {
     private String id;
     private Set<Material> replaceableInner;
     private Set<Material> replaceableOuter;
+    private Set<Material> replaceableTop;
+    private Set<Material> replaceableBottom;
     private Set<Material> update;
     private Map<Material, Set<Material>> shift;
     private Map<Integer, ProbabilityCollection<BlockData>> inner;
     private Map<Integer, ProbabilityCollection<BlockData>> outer;
+    private Map<Integer, ProbabilityCollection<BlockData>> top;
+    private Map<Integer, ProbabilityCollection<BlockData>> bottom;
     private boolean replaceIsBlacklistInner;
     private boolean replaceIsBlacklistOuter;
+    private boolean replaceIsBlacklistTop;
+    private boolean replaceIsBlacklistBottom;
 
     public CarverConfig(File file) throws IOException, InvalidConfigurationException {
         super(file);
@@ -53,8 +59,14 @@ public class CarverConfig extends TerraConfigObject {
 
         outer = getBlocks("palette.outer.blocks");
 
+        top = getBlocks("palette.top.blocks");
+
+        bottom = getBlocks("palette.bottom.blocks");
+
         replaceableInner = new HashSet<>();
         replaceableOuter = new HashSet<>();
+        replaceableTop = new HashSet<>();
+        replaceableBottom = new HashSet<>();
 
         for(String s : getStringList("palette.inner.replace")) {
             try {
@@ -72,6 +84,22 @@ public class CarverConfig extends TerraConfigObject {
                 throw new InvalidConfigurationException("Could not load data for " + s);
             }
         }
+        for(String s : getStringList("palette.top.replace")) {
+            try {
+                if(replaceableTop.contains(Bukkit.createBlockData(s).getMaterial())) Bukkit.getLogger().warning("Duplicate material in replaceable list: " + s);
+                replaceableTop.add(Bukkit.createBlockData(s).getMaterial());
+            } catch(NullPointerException | IllegalArgumentException e) {
+                throw new InvalidConfigurationException("Could not load data for " + s);
+            }
+        }
+        for(String s : getStringList("palette.bottom.replace")) {
+            try {
+                if(replaceableBottom.contains(Bukkit.createBlockData(s).getMaterial())) Bukkit.getLogger().warning("Duplicate material in replaceable list: " + s);
+                replaceableBottom.add(Bukkit.createBlockData(s).getMaterial());
+            } catch(NullPointerException | IllegalArgumentException e) {
+                throw new InvalidConfigurationException("Could not load data for " + s);
+            }
+        }
 
         update = new HashSet<>();
         for(String s : getStringList("update")) {
@@ -104,7 +132,7 @@ public class CarverConfig extends TerraConfigObject {
         MaxMin height = new MaxMin(getInt("start.height.min"), getInt("start.height.max"));
         id = getString("id");
         if(id == null) throw new InvalidConfigurationException("No ID specified for Carver!");
-        carver = new UserDefinedCarver(height, radius, length, start, mutate, radiusMultiplier, id.hashCode());
+        carver = new UserDefinedCarver(height, radius, length, start, mutate, radiusMultiplier, id.hashCode(), getInt("cut.top", 0), getInt("cut.bottom", 0));
         caveConfig.put(id, this);
     }
 
@@ -149,6 +177,20 @@ public class CarverConfig extends TerraConfigObject {
         return replaceableOuter.contains(m);
     }
 
+    public boolean isReplaceableTop(Material m) {
+        if(replaceIsBlacklistTop) {
+            return !replaceableTop.contains(m);
+        }
+        return replaceableTop.contains(m);
+    }
+
+    public boolean isReplaceableBottom(Material m) {
+        if(replaceIsBlacklistBottom) {
+            return !replaceableBottom.contains(m);
+        }
+        return replaceableBottom.contains(m);
+    }
+
     public ProbabilityCollection<BlockData> getPaletteInner(int y) {
         for(Map.Entry<Integer, ProbabilityCollection<BlockData>> e : inner.entrySet()) {
             if(e.getKey() >= y ) return e.getValue();
@@ -163,6 +205,20 @@ public class CarverConfig extends TerraConfigObject {
         return null;
     }
 
+    public ProbabilityCollection<BlockData> getPaletteBottom(int y) {
+        for(Map.Entry<Integer, ProbabilityCollection<BlockData>> e : bottom.entrySet()) {
+            if(e.getKey() >= y ) return e.getValue();
+        }
+        return null;
+    }
+
+    public ProbabilityCollection<BlockData> getPaletteTop(int y) {
+        for(Map.Entry<Integer, ProbabilityCollection<BlockData>> e : top.entrySet()) {
+            if(e.getKey() >= y ) return e.getValue();
+        }
+        return null;
+    }
+
     @Override
     public String toString() {
         return "Carver with ID " + getID();
diff --git a/src/main/java/com/dfsek/terra/generation/SlabGenerator.java b/src/main/java/com/dfsek/terra/generation/SlabGenerator.java
index 3878c4bfd..66d1ff293 100644
--- a/src/main/java/com/dfsek/terra/generation/SlabGenerator.java
+++ b/src/main/java/com/dfsek/terra/generation/SlabGenerator.java
@@ -8,6 +8,8 @@ import org.bukkit.Material;
 import org.bukkit.World;
 import org.bukkit.block.BlockFace;
 import org.bukkit.block.data.BlockData;
+import org.bukkit.block.data.Waterlogged;
+import org.bukkit.block.data.type.Slab;
 import org.bukkit.block.data.type.Stairs;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.util.Vector;
@@ -21,6 +23,7 @@ import java.util.Random;
 
 public class SlabGenerator extends GenerationPopulator {
     private static final BlockData AIR = Material.AIR.createBlockData();
+    private static final BlockData WATER = Material.WATER.createBlockData();
     private static final Palette<BlockData> AIRPALETTE = new RandomPalette<BlockData>(new Random(2403)).add(AIR, 1);
     @Override
     public ChunkGenerator.ChunkData populate(World world, ChunkGenerator.ChunkData chunk, Random random, int chunkX, int chunkZ, ChunkInterpolator interp) {
@@ -42,42 +45,48 @@ public class SlabGenerator extends GenerationPopulator {
     }
     private static void prepareBlockPart(ChunkInterpolator interp, ChunkGenerator.ChunkData chunk, Vector block, Map<Material, Palette<BlockData>> slabs, Map<Material, Palette<BlockData>> stairs, double thresh) {
         BlockData down = chunk.getBlockData(block.getBlockX(), block.getBlockY()-1, block.getBlockZ());
-        double _11 = interp.getNoise(block.getBlockX(), block.getBlockY() - 0.5, block.getBlockZ());
+        double _11 = interp.getNoise(block.getBlockX(), block.getBlockY() - 0.4, block.getBlockZ());
         if(_11 > thresh) {
-            double _00 = interp.getNoise(block.getBlockX() - 0.5, block.getBlockY(), block.getBlockZ() - 0.5);
+            BlockData orig = chunk.getBlockData(block.getBlockX(), block.getBlockY(), block.getBlockZ());
+            //double _00 = interp.getNoise(block.getBlockX() - 0.5, block.getBlockY(), block.getBlockZ() - 0.5);
             double _01 = interp.getNoise(block.getBlockX() - 0.5, block.getBlockY(), block.getBlockZ());
-            double _02 = interp.getNoise(block.getBlockX() - 0.5, block.getBlockY(), block.getBlockZ() + 0.5);
+            //double _02 = interp.getNoise(block.getBlockX() - 0.5, block.getBlockY(), block.getBlockZ() + 0.5);
             double _10 = interp.getNoise(block.getBlockX(), block.getBlockY(), block.getBlockZ() - 0.5);
             double _12 = interp.getNoise(block.getBlockX(), block.getBlockY(), block.getBlockZ() + 0.5);
-            double _20 = interp.getNoise(block.getBlockX() + 0.5, block.getBlockY(), block.getBlockZ() - 0.5);
+            //double _20 = interp.getNoise(block.getBlockX() + 0.5, block.getBlockY(), block.getBlockZ() - 0.5);
             double _21 = interp.getNoise(block.getBlockX() + 0.5, block.getBlockY(), block.getBlockZ());
-            double _22 = interp.getNoise(block.getBlockX() + 0.5, block.getBlockY(), block.getBlockZ() + 0.5);
+            //double _22 = interp.getNoise(block.getBlockX() + 0.5, block.getBlockY(), block.getBlockZ() + 0.5);
 
             if(stairs != null) {
                 Palette<BlockData> stairPalette = stairs.get(down.getMaterial());
                 if(stairPalette != null) {
                     BlockData stair = stairPalette.get(0, block.getBlockX(), block.getBlockZ());
-                    Stairs finalStair = getStair(new double[] {_00, _01, _02, _10, _12, _20, _21, _22}, (Stairs) stair, thresh);
+                    Stairs finalStair = getStair(new double[] {_01, _10, _12, _21}, (Stairs) stair, thresh);
                     if(finalStair != null) {
+                        if(orig.matches(WATER)) finalStair.setWaterlogged(true);
                         chunk.setBlock(block.getBlockX(), block.getBlockY(), block.getBlockZ(), finalStair);
                         return;
                     }
                 }
             }
-            chunk.setBlock(block.getBlockX(), block.getBlockY(), block.getBlockZ(), slabs.getOrDefault(down.getMaterial(), AIRPALETTE).get(0, block.getBlockX(), block.getBlockZ()));
+            BlockData slab = slabs.getOrDefault(down.getMaterial(), AIRPALETTE).get(0, block.getBlockX(), block.getBlockZ());
+            if(slab instanceof Waterlogged) {
+                ((Waterlogged) slab).setWaterlogged(orig.matches(WATER));
+            }
+            chunk.setBlock(block.getBlockX(), block.getBlockY(), block.getBlockZ(), slab);
         }
     }
 
     private static Stairs getStair(double[] vals, Stairs stair, double thresh) {
-        if(vals.length != 8) throw new IllegalArgumentException();
+        if(vals.length != 4) throw new IllegalArgumentException();
         Stairs stairNew = (Stairs) stair.clone();
-        if(vals[1] > thresh) {
+        if(vals[0] > thresh) {
             stairNew.setFacing(BlockFace.WEST);
-        } else if(vals[3] > thresh) {
+        } else if(vals[1] > thresh) {
             stairNew.setFacing(BlockFace.NORTH);
-        } else if(vals[4] > thresh) {
+        } else if(vals[2] > thresh) {
             stairNew.setFacing(BlockFace.SOUTH);
-        } else if(vals[6] > thresh) {
+        } else if(vals[3] > thresh) {
             stairNew.setFacing(BlockFace.EAST);
         } else return null;
         return stairNew;
diff --git a/src/main/java/com/dfsek/terra/population/CavePopulator.java b/src/main/java/com/dfsek/terra/population/CavePopulator.java
index be4cf2332..3c4c08891 100644
--- a/src/main/java/com/dfsek/terra/population/CavePopulator.java
+++ b/src/main/java/com/dfsek/terra/population/CavePopulator.java
@@ -35,9 +35,15 @@ public class CavePopulator extends BlockPopulator {
                 if(e.getValue().equals(CarvingData.CarvingType.CENTER) && c.isReplaceableInner(m)) {
                     if(c.getShiftedBlocks().containsKey(b.getType())) shiftCandidate.put(b.getLocation(), b.getType());
                     b.setBlockData(c.getPaletteInner(v.getBlockY()).get(random), false);
-                } else if(c.isReplaceableOuter(m)){
+                } else if(e.getValue().equals(CarvingData.CarvingType.WALL) && c.isReplaceableOuter(m)){
                     if(c.getShiftedBlocks().containsKey(b.getType())) shiftCandidate.put(b.getLocation(), b.getType());
                     b.setBlockData(c.getPaletteOuter(v.getBlockY()).get(random), false);
+                } else if(e.getValue().equals(CarvingData.CarvingType.TOP) && c.isReplaceableTop(m)){
+                    if(c.getShiftedBlocks().containsKey(b.getType())) shiftCandidate.put(b.getLocation(), b.getType());
+                    b.setBlockData(c.getPaletteTop(v.getBlockY()).get(random), false);
+                } else if(e.getValue().equals(CarvingData.CarvingType.BOTTOM) && c.isReplaceableBottom(m)){
+                    if(c.getShiftedBlocks().containsKey(b.getType())) shiftCandidate.put(b.getLocation(), b.getType());
+                    b.setBlockData(c.getPaletteBottom(v.getBlockY()).get(random), false);
                 }
                 if(c.getUpdateBlocks().contains(m)) {
                     updateNeeded.add(b);
diff --git a/src/main/java/com/dfsek/terra/population/TreePopulator.java b/src/main/java/com/dfsek/terra/population/TreePopulator.java
index 51e5f5123..fcabffe5a 100644
--- a/src/main/java/com/dfsek/terra/population/TreePopulator.java
+++ b/src/main/java/com/dfsek/terra/population/TreePopulator.java
@@ -25,7 +25,7 @@ public class TreePopulator extends GaeaBlockPopulator {
         Biome b = TerraBiomeGrid.fromWorld(world).getBiome(origin);
         if(((UserDefinedDecorator) b.getDecorator()).getTreeChance() < random.nextInt(100)) return;
         int numTrees = 0;
-        for(int i = 0; i < 10; i++) {
+        for(int i = 0; i < 48; i++) {
             int y = WorldUtil.getHighestValidSpawnAt(chunk, x, z);
             if(y <= 0) continue;
             origin = chunk.getBlock(x, y, z).getLocation().add(0, 1, 0);
@@ -34,7 +34,7 @@ public class TreePopulator extends GaeaBlockPopulator {
             try {
                 b.getDecorator().getTrees().get(random).plant(origin, random, false, Terra.getInstance());
             } catch(NullPointerException ignored) {}
-            if(numTrees >= b.getDecorator().getTreeDensity()) return;
+            if(numTrees >= b.getDecorator().getTreeDensity()) break;
             x = random.nextInt(16); // Decrease chances of chunk-crossing trees
             z = random.nextInt(16);
         }