diff --git a/core/src/main/java/com/volmit/iris/util/mantle/MantleChunk.java b/core/src/main/java/com/volmit/iris/util/mantle/MantleChunk.java
index fe5f0cec7..4f847213b 100644
--- a/core/src/main/java/com/volmit/iris/util/mantle/MantleChunk.java
+++ b/core/src/main/java/com/volmit/iris/util/mantle/MantleChunk.java
@@ -220,7 +220,9 @@ public class MantleChunk {
 
         if (matter == null) {
             matter = new IrisMatter(16, 16, 16);
-            sections.set(section, matter);
+            if (!sections.compareAndSet(section, null, matter)) {
+                matter = get(section);
+            }
         }
 
         return matter;
diff --git a/core/src/main/java/com/volmit/iris/util/matter/IrisMatter.java b/core/src/main/java/com/volmit/iris/util/matter/IrisMatter.java
index d645df076..233a9173e 100644
--- a/core/src/main/java/com/volmit/iris/util/matter/IrisMatter.java
+++ b/core/src/main/java/com/volmit/iris/util/matter/IrisMatter.java
@@ -25,6 +25,8 @@ import com.volmit.iris.util.json.JSONObject;
 import com.volmit.iris.util.plugin.VolmitSender;
 import lombok.Getter;
 
+import java.util.Objects;
+
 public class IrisMatter extends IrisRegistrant implements Matter {
     protected static final KMap<Class<?>, MatterSlice<?>> slicers = buildSlicers();
 
@@ -65,6 +67,12 @@ public class IrisMatter extends IrisRegistrant implements Matter {
         return c;
     }
 
+    @Override
+    @SuppressWarnings("unchecked")
+    public <T> MatterSlice<T> slice(Class<?> c) {
+        return (MatterSlice<T>) sliceMap.computeIfAbsent(c, $ -> Objects.requireNonNull(createSlice(c, this), "Bad slice " + c.getCanonicalName()));
+    }
+
     @Override
     public <T> MatterSlice<T> createSlice(Class<T> type, Matter m) {
         MatterSlice<?> slice = slicers.get(type);