[1.12.2] Custom Armor Model not rendering correctly

I'm trying to render a custom [chestplate] but it won't work properly. I made the code using Tabula mod, but what happens is that the rendered parts connected to the arms won't move, they just stay static.

Anything I miss?

Model class:

import net.minecraft.client.model.ModelBiped;
import net.minecraft.client.model.ModelRenderer;
import net.minecraft.entity.Entity;
import net.minecraft.client.renderer.GlStateManager;

public class ModelMSapphireArmor extends ModelBiped {

    public ModelRenderer Chestplate;
    public ModelRenderer ShoulderRight;
    public ModelRenderer MegaRight;
    public ModelRenderer MegaRight_1;
    public ModelRenderer MegaRight_2;

    public ModelMSapphireArmor() {
        this.textureWidth = 128;
        this.textureHeight = 128;
        this.MegaRight = new ModelRenderer(this, 110, 32);
        this.MegaRight.setRotationPoint(-3.0F, -2.0F, -2.0F);
        this.MegaRight.addBox(-9.0F, -4.8F, 0.9F, 2, 3, 2, 0.0F);
        this.MegaRight_1 = new ModelRenderer(this, 92, 32);
        this.MegaRight_1.setRotationPoint(-3.0F, -2.0F, -2.0F);
        this.MegaRight_1.addBox(-7.0F, -0.1F, 0.1F, 3, 3, 4, 0.0F);
        this.ShoulderRight = new ModelRenderer(this, 74, 42);
        this.ShoulderRight.setRotationPoint(-3.0F, -2.0F, -2.0F);
        this.ShoulderRight.addBox(-8.5F, 3.6F, -1.0F, 8, 10, 8, 0.0F);
        this.Chestplate = new ModelRenderer(this, 73, -4);
        this.Chestplate.setRotationPoint(-4.0F, 0.0F, -2.0F);
        this.Chestplate.addBox(-1.7F, 0.0F, -1.0F, 16, 22, 8, 0.0F);
        this.MegaRight_2 = new ModelRenderer(this, 76, 32);
        this.MegaRight_2.setRotationPoint(-3.0F, -2.0F, -2.0F);
        this.MegaRight_2.addBox(-8.5F, -2.5F, 0.5F, 3, 3, 3, 0.0F);

        this.bipedBody.addChild(Chestplate);
        this.bipedRightArm.addChild(ShoulderRight);
        this.bipedRightArm.addChild(MegaRight);
        this.bipedRightArm.addChild(MegaRight_1);
        this.bipedRightArm.addChild(MegaRight_2);
    }

    @Override
    public void render(Entity entity, float f, float f1, float f2, float f3, float f4, float f5) {
        this.MegaRight.render(f5);
        this.MegaRight_1.render(f5);
        GlStateManager.pushMatrix();
        GlStateManager.translate(this.ShoulderRight.offsetX, this.ShoulderRight.offsetY, this.ShoulderRight.offsetZ);
        GlStateManager.translate(this.ShoulderRight.rotationPointX * f5, this.ShoulderRight.rotationPointY * f5, this.ShoulderRight.rotationPointZ * f5);
        GlStateManager.scale(0.65D, 0.55D, 0.7D);
        GlStateManager.translate(-this.ShoulderRight.offsetX, -this.ShoulderRight.offsetY, -this.ShoulderRight.offsetZ);
        GlStateManager.translate(-this.ShoulderRight.rotationPointX * f5, -this.ShoulderRight.rotationPointY * f5, -this.ShoulderRight.rotationPointZ * f5);
        this.ShoulderRight.render(f5);
        GlStateManager.popMatrix();
        GlStateManager.pushMatrix();
        GlStateManager.translate(this.Chestplate.offsetX, this.Chestplate.offsetY, this.Chestplate.offsetZ);
        GlStateManager.translate(this.Chestplate.rotationPointX * f5, this.Chestplate.rotationPointY * f5, this.Chestplate.rotationPointZ * f5);
        GlStateManager.scale(0.65D, 0.55D, 0.7D);
        GlStateManager.translate(-this.Chestplate.offsetX, -this.Chestplate.offsetY, -this.Chestplate.offsetZ);
        GlStateManager.translate(-this.Chestplate.rotationPointX * f5, -this.Chestplate.rotationPointY * f5, -this.Chestplate.rotationPointZ * f5);
        this.Chestplate.render(f5);
        GlStateManager.popMatrix();
        this.MegaRight_2.render(f5);
    }

    public void setRotateAngle(ModelRenderer modelRenderer, float x, float y, float z) {
        modelRenderer.rotateAngleX = x;
        modelRenderer.rotateAngleY = y;
        modelRenderer.rotateAngleZ = z;
    }
}

Armor Render class:

import net.minecraft.client.model.ModelBiped;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.inventory.EntityEquipmentSlot;
import net.minecraft.item.ItemArmor;
import net.minecraft.item.ItemStack;
import tutuicraft3.sapphirecraft.Main;
import tutuicraft3.sapphirecraft.init.ItemInit;
import tutuicraft3.sapphirecraft.util.interfaces.IHasModel;

public class ArmorModel extends ItemArmor implements IHasModel
{
    public ArmorModel(String name, CreativeTabs tab, ArmorMaterial materialIn, EntityEquipmentSlot equipmentSlotIn)
    {
        super(materialIn, 1, equipmentSlotIn);
        setUnlocalizedName(name);
        setRegistryName(name);
        setCreativeTab(tab);
        setMaxStackSize(1);

        ItemInit.ITEMS.add(this);
    }

    @Override
    public boolean hasEffect(ItemStack stack) {
        return true;
    }

    @Override
    public void registerModels()
    {
        Main.proxy.registerModel(this, 0);
    }

    @Override
    public ModelBiped getArmorModel(EntityLivingBase entityLiving, ItemStack itemStack, EntityEquipmentSlot armorSlot, ModelBiped _default)
    {
        if(itemStack != ItemStack.EMPTY)
        {
            if(itemStack.getItem() instanceof ItemArmor)
            {
                ModelMSapphireArmor model = new ModelMSapphireArmor();

                model.bipedHead.showModel = armorSlot == EntityEquipmentSlot.HEAD;

                model.isChild = _default.isChild;
                model.isRiding = _default.isRiding;
                model.isSneak = _default.isSneak;
                model.rightArmPose = _default.rightArmPose;
                model.leftArmPose = _default.leftArmPose;

                return model;
            }
        }

        return null;
    }

}

VIDEO

Edited May 23, 20196 yr by Arthur Wesley
More info.