Custom mob part dont animate well!

I make a mob with legs, arms, body, head and one other part. I choice head animation for this part. I go in the code, at the end and the part had the same animation than the head. 

This is the code of the mob:

package net.mcreator.adventure;

import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.common.registry.EntityEntryBuilder;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
import net.minecraftforge.fml.client.registry.RenderingRegistry;

import net.minecraft.world.biome.Biome;
import net.minecraft.world.World;
import net.minecraft.util.registry.RegistryNamespaced;
import net.minecraft.util.math.MathHelper;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.DamageSource;
import net.minecraft.item.ItemStack;
import net.minecraft.item.Item;
import net.minecraft.inventory.EntityEquipmentSlot;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.monster.EntityMob;
import net.minecraft.entity.ai.EntityAIWatchClosest;
import net.minecraft.entity.ai.EntityAIWander;
import net.minecraft.entity.ai.EntityAISwimming;
import net.minecraft.entity.ai.EntityAILookIdle;
import net.minecraft.entity.ai.EntityAILeapAtTarget;
import net.minecraft.entity.ai.EntityAIHurtByTarget;
import net.minecraft.entity.ai.EntityAIAttackMelee;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.entity.EnumCreatureAttribute;
import net.minecraft.entity.Entity;
import net.minecraft.client.renderer.entity.RenderLiving;
import net.minecraft.client.model.ModelRenderer;
import net.minecraft.client.model.ModelBase;

import java.util.Iterator;
import java.util.HashMap;
import java.util.ArrayList;

@Elementsadventure.ModElement.Tag
public class MCreatorDwarf extends Elementsadventure.ModElement {
	public static final int ENTITYID = 1;
	public static final int ENTITYID_RANGED = 2;

	public MCreatorDwarf(Elementsadventure instance) {
		super(instance, 4);
	}

	@Override
	public void initElements() {
		elements.entities.add(() -> EntityEntryBuilder.create().entity(EntityCustom.class).id(new ResourceLocation("adventure", "dwarf"), ENTITYID)
				.name("dwarf").tracker(64, 1, true).egg(-5407380, -10994131).build());
	}

	private Biome[] allbiomes(net.minecraft.util.registry.RegistryNamespaced<ResourceLocation, Biome> in) {
		Iterator<Biome> itr = in.iterator();
		ArrayList<Biome> ls = new ArrayList<Biome>();
		while (itr.hasNext())
			ls.add(itr.next());
		return ls.toArray(new Biome[ls.size()]);
	}

	@SideOnly(Side.CLIENT)
	@Override
	public void preInit(FMLPreInitializationEvent event) {
		RenderingRegistry.registerEntityRenderingHandler(EntityCustom.class, renderManager -> {
			return new RenderLiving(renderManager, new ModelDwarf(), 0.5f) {
				protected ResourceLocation getEntityTexture(Entity entity) {
					return new ResourceLocation("adventure:textures/dwarf.png");
				}
			};
		});
	}

	public static class EntityCustom extends EntityMob {
		public EntityCustom(World world) {
			super(world);
			setSize(0.6f, 1.4000000000000001f);
			experienceValue = 7;
			this.isImmuneToFire = false;
			setNoAI(!true);
			enablePersistence();
			this.tasks.addTask(1, new EntityAIWander(this, 1));
			this.tasks.addTask(2, new EntityAIWatchClosest(this, EntityPlayer.class, (float) 6));
			this.tasks.addTask(3, new EntityAIAttackMelee(this, 1, false));
			this.targetTasks.addTask(4, new EntityAIHurtByTarget(this, true));
			this.tasks.addTask(5, new EntityAILookIdle(this));
			this.tasks.addTask(6, new EntityAISwimming(this));
			this.tasks.addTask(7, new EntityAILeapAtTarget(this, (float) 0.8));
			this.setItemStackToSlot(EntityEquipmentSlot.MAINHAND, new ItemStack(MCreatorDwarfPick.block, (int) (1)));
		}

		@Override
		public EnumCreatureAttribute getCreatureAttribute() {
			return EnumCreatureAttribute.UNDEFINED;
		}

		@Override
		protected boolean canDespawn() {
			return false;
		}

		@Override
		protected Item getDropItem() {
			return null;
		}

		@Override
		public net.minecraft.util.SoundEvent getAmbientSound() {
			return (net.minecraft.util.SoundEvent) net.minecraft.util.SoundEvent.REGISTRY.getObject(new ResourceLocation(""));
		}

		@Override
		public net.minecraft.util.SoundEvent getHurtSound(DamageSource ds) {
			return (net.minecraft.util.SoundEvent) net.minecraft.util.SoundEvent.REGISTRY.getObject(new ResourceLocation("entity.villager.hurt"));
		}

		@Override
		public net.minecraft.util.SoundEvent getDeathSound() {
			return (net.minecraft.util.SoundEvent) net.minecraft.util.SoundEvent.REGISTRY.getObject(new ResourceLocation("entity.villager.death"));
		}

		@Override
		protected float getSoundVolume() {
			return 1.0F;
		}

		@Override
		public void onDeath(DamageSource source) {
			super.onDeath(source);
			int x = (int) this.posX;
			int y = (int) this.posY;
			int z = (int) this.posZ;
			Entity entity = this;
			{
				java.util.HashMap<String, Object> $_dependencies = new java.util.HashMap<>();
				$_dependencies.put("x", x);
				$_dependencies.put("y", y);
				$_dependencies.put("z", z);
				$_dependencies.put("world", world);
				MCreatorDwarfEntityDies.executeProcedure($_dependencies);
			}
		}

		@Override
		protected void applyEntityAttributes() {
			super.applyEntityAttributes();
			if (this.getEntityAttribute(SharedMonsterAttributes.ARMOR) != null)
				this.getEntityAttribute(SharedMonsterAttributes.ARMOR).setBaseValue(0D);
			if (this.getEntityAttribute(SharedMonsterAttributes.MOVEMENT_SPEED) != null)
				this.getEntityAttribute(SharedMonsterAttributes.MOVEMENT_SPEED).setBaseValue(0.3D);
			if (this.getEntityAttribute(SharedMonsterAttributes.MAX_HEALTH) != null)
				this.getEntityAttribute(SharedMonsterAttributes.MAX_HEALTH).setBaseValue(20D);
			if (this.getEntityAttribute(SharedMonsterAttributes.ATTACK_DAMAGE) != null)
				this.getEntityAttribute(SharedMonsterAttributes.ATTACK_DAMAGE).setBaseValue(3D);
		}

		protected void dropRareDrop(int par1) {
			this.dropItem(new ItemStack(MCreatorDwarfPick.block, (int) (1)).getItem(), 1);
		}
	}

	// Date: 2019-09-27 20:09:35
	// Template version 1.1
	// Java generated by Techne
	// Keep in mind that you still need to fill in some blanks
	// - ZeuX
	public static class ModelDwarf extends ModelBase {
		// fields
		ModelRenderer head;
		ModelRenderer body;
		ModelRenderer rightarm;
		ModelRenderer leftarm;
		ModelRenderer rightleg;
		ModelRenderer leftleg;
		ModelRenderer Nose;

		public ModelDwarf() {
			textureWidth = 128;
			textureHeight = 64;
			head = new ModelRenderer(this, 0, 0);
			head.addBox(-4F, -8F, -4F, 8, 8, 8);
			head.setRotationPoint(0F, 6F, 0F);
			head.setTextureSize(128, 64);
			head.mirror = true;
			setRotation(head, 0F, 0F, 0F);
			body = new ModelRenderer(this, 16, 16);
			body.addBox(-4F, 0F, -2F, 8, 10, 4);
			body.setRotationPoint(0F, 6F, 0F);
			body.setTextureSize(128, 64);
			body.mirror = true;
			setRotation(body, 0F, 0F, 0F);
			rightarm = new ModelRenderer(this, 40, 16);
			rightarm.addBox(-3F, -2F, -2F, 4, 10, 4);
			rightarm.setRotationPoint(-5F, 8F, 0F);
			rightarm.setTextureSize(128, 64);
			rightarm.mirror = true;
			setRotation(rightarm, 0F, 0F, 0F);
			leftarm = new ModelRenderer(this, 40, 16);
			leftarm.addBox(-1F, -2F, -2F, 4, 10, 4);
			leftarm.setRotationPoint(5F, 8F, 0F);
			leftarm.setTextureSize(128, 64);
			leftarm.mirror = true;
			setRotation(leftarm, 0F, 0F, 0F);
			rightleg = new ModelRenderer(this, 0, 16);
			rightleg.addBox(-2F, 0F, -2F, 4, 8, 4);
			rightleg.setRotationPoint(-2F, 16F, 0F);
			rightleg.setTextureSize(128, 64);
			rightleg.mirror = true;
			setRotation(rightleg, 0F, 0F, 0F);
			leftleg = new ModelRenderer(this, 0, 16);
			leftleg.addBox(-2F, 0F, -2F, 4, 8, 4);
			leftleg.setRotationPoint(2F, 16F, 0F);
			leftleg.setTextureSize(128, 64);
			leftleg.mirror = true;
			setRotation(leftleg, 0F, 0F, 0F);
			Nose = new ModelRenderer(this, 32, 0);
			Nose.addBox(0F, 0F, 0F, 2, 2, 1);
			Nose.setRotationPoint(-1F, 2F, -5F);
			Nose.setTextureSize(128, 64);
			Nose.mirror = true;
			setRotation(Nose, 0F, 0F, 0F);
		}

		public void render(Entity entity, float f, float f1, float f2, float f3, float f4, float f5) {
			super.render(entity, f, f1, f2, f3, f4, f5);
			setRotationAngles(f, f1, f2, f3, f4, f5, entity);
			head.render(f5);
			body.render(f5);
			rightarm.render(f5);
			leftarm.render(f5);
			rightleg.render(f5);
			leftleg.render(f5);
			Nose.render(f5);
		}

		private void setRotation(ModelRenderer model, float x, float y, float z) {
			model.rotateAngleX = x;
			model.rotateAngleY = y;
			model.rotateAngleZ = z;
		}

		public void setRotationAngles(float f, float f1, float f2, float f3, float f4, float f5, Entity e) {
			super.setRotationAngles(f, f1, f2, f3, f4, f5, e);
			this.head.rotateAngleY = f3 / (180F / (float) Math.PI);
			this.head.rotateAngleX = f4 / (180F / (float) Math.PI);
			this.rightleg.rotateAngleX = MathHelper.cos(f * 1.0F) * 1.0F * f1;
			this.Nose.rotateAngleY = f3 / (180F / (float) Math.PI);
			this.Nose.rotateAngleX = f4 / (180F / (float) Math.PI);
			this.rightarm.rotateAngleX = MathHelper.cos(f * 0.6662F + (float) Math.PI) * f1;
			this.leftleg.rotateAngleX = MathHelper.cos(f * 1.0F) * -1.0F * f1;
			this.leftarm.rotateAngleX = MathHelper.cos(f * 0.6662F) * f1;
		}
	}
}

I was knowing how to do that before the update and i remenber how to do this but this time its now working

I know that my English its really bad