diff --git a/src/main/java/ru/betterend/entity/model/CubozoaEntityModel.java b/src/main/java/ru/betterend/entity/model/CubozoaEntityModel.java
index d0651499..191f2554 100644
--- a/src/main/java/ru/betterend/entity/model/CubozoaEntityModel.java
+++ b/src/main/java/ru/betterend/entity/model/CubozoaEntityModel.java
@@ -111,8 +111,8 @@ public class CubozoaEntityModel extends BlockBenchModel<CubozoaEntity> {
 
         model = modelPart.getChild(PartNames.BODY);
         for (int i=1; i<=TENTACLE_COUNT; i++){
-            tentacle_center[i] = model.getChild("tentacle_center_"+i);
-            tentacle[i] = tentacle_center[i].getChild("tentacle_"+i);
+            tentacle_center[i-1] = model.getChild("tentacle_center_"+i);
+            tentacle[i-1] = tentacle_center[i-1].getChild("tentacle_"+i);
         }
     }
 
diff --git a/src/main/java/ru/betterend/entity/model/DragonflyEntityModel.java b/src/main/java/ru/betterend/entity/model/DragonflyEntityModel.java
index 8885af2f..aaf1bc9f 100644
--- a/src/main/java/ru/betterend/entity/model/DragonflyEntityModel.java
+++ b/src/main/java/ru/betterend/entity/model/DragonflyEntityModel.java
@@ -145,15 +145,15 @@ public class DragonflyEntityModel extends BlockBenchModel<DragonflyEntity> {
         super(RenderType::entityCutout);
 
         model = modelPart.getChild(PartNames.BODY);
-        head = modelPart.getChild(PartNames.HEAD);
-        tail = modelPart.getChild(PartNames.TAIL);
-        tail_2 = modelPart.getChild(PartNames.TAIL_FIN);
-        wing_1 = modelPart.getChild(PartNames.LEFT_WING);
-        wing_2 = modelPart.getChild(PartNames.RIGHT_WING);
-        wing_3 = modelPart.getChild(PartNames.LEFT_WING_TIP);
-        wing_4 = modelPart.getChild(PartNames.RIGHT_WING_BASE);
-        legs_1 = modelPart.getChild(PartNames.LEFT_LEG);
-        legs_2 = modelPart.getChild(PartNames.RIGHT_LEG);
+        head = model.getChild(PartNames.HEAD);
+        tail = model.getChild(PartNames.TAIL);
+        tail_2 = tail.getChild(PartNames.TAIL_FIN);
+        wing_1 = model.getChild(PartNames.LEFT_WING);
+        wing_2 = model.getChild(PartNames.RIGHT_WING);
+        wing_3 = model.getChild(PartNames.LEFT_WING_BASE);
+        wing_4 = model.getChild(PartNames.RIGHT_WING_BASE);
+        legs_1 = model.getChild(PartNames.LEFT_LEG);
+        legs_2 = model.getChild(PartNames.RIGHT_LEG);
     }
 
     @Override
diff --git a/src/main/java/ru/betterend/entity/model/EndSlimeEntityModel.java b/src/main/java/ru/betterend/entity/model/EndSlimeEntityModel.java
index 2abf6c55..54609256 100644
--- a/src/main/java/ru/betterend/entity/model/EndSlimeEntityModel.java
+++ b/src/main/java/ru/betterend/entity/model/EndSlimeEntityModel.java
@@ -120,15 +120,23 @@ public class EndSlimeEntityModel<T extends EndSlimeEntity> extends ListModel<T>
 		return LayerDefinition.create(modelData, 64, 32);
 	}
 
-	public EndSlimeEntityModel(ModelPart modelPart) {
+	public EndSlimeEntityModel(ModelPart modelPart, boolean onlyShell) {
 		super(RenderType::entityCutout);
 
 		innerCube = modelPart.getChild(PartNames.BODY);
-		rightEye = modelPart.getChild(PartNames.RIGHT_EYE);
-		leftEye = modelPart.getChild(PartNames.LEFT_EYE);
-		mouth = modelPart.getChild(PartNames.MOUTH);
-		flower = modelPart.getChild("flower");
-		crop = modelPart.getChild("crop");
+		if (!onlyShell) {
+			rightEye = modelPart.getChild(PartNames.RIGHT_EYE);
+			leftEye = modelPart.getChild(PartNames.LEFT_EYE);
+			mouth = modelPart.getChild(PartNames.MOUTH);
+			flower = modelPart.getChild("flower");
+			crop = modelPart.getChild("crop");
+		} else {
+			rightEye = null;
+			leftEye = null;
+			mouth = null;
+			flower = null;
+			crop = null;
+		}
 	}
 
 	@Override
@@ -144,8 +152,16 @@ public class EndSlimeEntityModel<T extends EndSlimeEntity> extends ListModel<T>
 		crop.render(matrices, vertices, light, overlay);
 	}
 
+	private boolean isOnlyShell(){
+		return rightEye==null;
+	}
+
 	@Override
 	public Iterable<ModelPart> parts() {
-		return ImmutableList.of(this.innerCube, this.rightEye, this.leftEye, this.mouth);
+		if (isOnlyShell()) {
+			return ImmutableList.of(this.innerCube);
+		} else {
+			return ImmutableList.of(this.innerCube, this.rightEye, this.leftEye, this.mouth);
+		}
 	}
 }
diff --git a/src/main/java/ru/betterend/integration/rei/REIPlugin.java b/src/main/java/ru/betterend/integration/rei/REIPluginClient.java
similarity index 92%
rename from src/main/java/ru/betterend/integration/rei/REIPlugin.java
rename to src/main/java/ru/betterend/integration/rei/REIPluginClient.java
index 3400310a..287f5016 100644
--- a/src/main/java/ru/betterend/integration/rei/REIPlugin.java
+++ b/src/main/java/ru/betterend/integration/rei/REIPluginClient.java
@@ -5,6 +5,7 @@ import me.shedaniel.rei.api.client.plugins.REIClientPlugin;
 import me.shedaniel.rei.api.client.registry.category.CategoryRegistry;
 import me.shedaniel.rei.api.common.category.CategoryIdentifier;
 import me.shedaniel.rei.api.common.entry.EntryStack;
+import me.shedaniel.rei.api.common.plugins.REIServerPlugin;
 import me.shedaniel.rei.api.common.util.EntryIngredients;
 import me.shedaniel.rei.api.common.util.EntryStacks;
 import me.shedaniel.rei.impl.ClientInternals;
@@ -20,6 +21,7 @@ import ru.betterend.recipe.builders.AlloyingRecipe;
 import ru.betterend.recipe.builders.AnvilRecipe;
 import ru.betterend.recipe.builders.InfusionRecipe;
 import ru.betterend.registry.EndBlocks;
+import org.jetbrains.annotations.ApiStatus;
 
 import java.util.List;
 import java.util.function.Supplier;
@@ -27,7 +29,8 @@ import java.util.stream.Collectors;
 
 //https://github.com/shedaniel/RoughlyEnoughItems/blob/6.x-1.17/default-plugin/src/main/java/me/shedaniel/rei/plugin/client/DefaultClientPlugin.java
 @Environment(EnvType.CLIENT)
-public class REIPlugin implements REIClientPlugin {
+@ApiStatus.Internal
+public class REIPlugin implements me.shedaniel.rei.api.client.plugins.REIClientPlugin {
 
 	public final static ResourceLocation PLUGIN_ID = BetterEnd.makeID("rei_plugin");
 	public final static CategoryIdentifier ALLOYING_FUEL =  CategoryIdentifier.of(BetterEnd.MOD_ID, "alloying_fuel");