diff --git a/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java b/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java
index 4f60227ec..f58a48480 100644
--- a/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java
+++ b/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java
@@ -98,7 +98,7 @@ public class PlannedStructure {
         int zz = i.getPosition().getZ() + sz;
         RNG rngf = new RNG(Cache.key(xx, zz));
         int offset = i.getPosition().getY() - startHeight;
-        int height = 0;
+        int height;
 
         if(i.getStructure().getStructure().getLockY() == -1) {
             if(i.getStructure().getStructure().getOverrideYRange() != null) {
diff --git a/src/main/java/com/volmit/iris/engine/mantle/EngineMantle.java b/src/main/java/com/volmit/iris/engine/mantle/EngineMantle.java
index 6ee36836d..451e84ace 100644
--- a/src/main/java/com/volmit/iris/engine/mantle/EngineMantle.java
+++ b/src/main/java/com/volmit/iris/engine/mantle/EngineMantle.java
@@ -190,31 +190,33 @@ public interface EngineMantle extends IObjectPlacer {
 
     @ChunkCoordinates
     default void generateMatter(int x, int z, boolean multicore, ChunkContext context) {
-        if(!getEngine().getDimension().isUseMantle()) {
-            return;
-        }
-
-        int s = getRealRadius();
-        BurstExecutor burst = burst().burst(multicore);
-        MantleWriter writer = getMantle().write(this, x, z, s * 2);
-        for(int i = -s; i <= s; i++) {
-            for(int j = -s; j <= s; j++) {
-                int xx = i + x;
-                int zz = j + z;
-                burst.queue(() -> {
-                    IrisContext.touch(getEngine().getContext());
-                    getMantle().raiseFlag(xx, zz, MantleFlag.PLANNED, () -> {
-                        MantleChunk mc = getMantle().getChunk(xx, zz);
-
-                        for(MantleComponent k : getComponents()) {
-                            generateMantleComponent(writer, xx, zz, k, mc, context);
-                        }
-                    });
-                });
+        synchronized(this) {
+            if(!getEngine().getDimension().isUseMantle()) {
+                return;
             }
-        }
 
-        burst.complete();
+            int s = getRealRadius();
+            BurstExecutor burst = burst().burst(multicore);
+            MantleWriter writer = getMantle().write(this, x, z, s * 2);
+            for(int i = -s; i <= s; i++) {
+                for(int j = -s; j <= s; j++) {
+                    int xx = i + x;
+                    int zz = j + z;
+                    burst.queue(() -> {
+                        IrisContext.touch(getEngine().getContext());
+                        getMantle().raiseFlag(xx, zz, MantleFlag.PLANNED, () -> {
+                            MantleChunk mc = getMantle().getChunk(xx, zz);
+
+                            for(MantleComponent k : getComponents()) {
+                                generateMantleComponent(writer, xx, zz, k, mc, context);
+                            }
+                        });
+                    });
+                }
+            }
+
+            burst.complete();
+        }
     }
 
     default void generateMantleComponent(MantleWriter writer, int x, int z, MantleComponent c, MantleChunk mc, ChunkContext context) {
diff --git a/src/main/java/com/volmit/iris/util/mantle/Mantle.java b/src/main/java/com/volmit/iris/util/mantle/Mantle.java
index 8ad73f95a..f000a0572 100644
--- a/src/main/java/com/volmit/iris/util/mantle/Mantle.java
+++ b/src/main/java/com/volmit/iris/util/mantle/Mantle.java
@@ -249,9 +249,9 @@ public class Mantle {
      */
     @ChunkCoordinates
     public <T> void iterateChunk(int x, int z, Class<T> type, Consumer4<Integer, Integer, Integer, T> iterator) {
-        if(!hasTectonicPlate(x >> 5, z >> 5)) {
+        /*if(!hasTectonicPlate(x >> 5, z >> 5)) {
             return;
-        }
+        }*/
 
         get(x >> 5, z >> 5).getOrCreate(x & 31, z & 31).iterate(type, iterator);
     }