Having problems creating new Custom Item.monsterplacer with entity IDs.

To the point...

I can use this code to allow mobs to drop their MobEggs upon death...

    	int id = EntityList.getEntityID(event.entity);
    	if (id > 0 && EntityList.entityEggs.containsKey(id))
        {
            ItemStack newEgg =  new ItemStack(Item.monsterPlacer, 1, id);
            event.entityLiving.entityDropItem(newEgg, 0F);
        }

Now this only works with Minecraft Mobs.... =/

I been trying to get my custom mobs/eggs to work, however the EntityList.getEntityID always comes up with 0 as the ID..

Also I tried using event.entity.entityID, however that value just jumps all over the place, never the same for each entity walking around of the same type.

I use this for my Mob ids...

//Set up Monster Eggs
  	static int startEntityId = 300;

Inside my load()
//Register Entity Mobs
	EntityRegistry.registerModEntity(EntityHSSlimeSoul.class, "Ectoplasm", 10, this, 80, 3, true);
	EntityRegistry.registerModEntity(EntityHSSlimeBlood.class, "Hemoglobin", 11, this, 80, 3, true);

//Egg Setup
  	public static int getUniqueEntityId() 
  	{
  		do 
  		{
  			startEntityId++;
  		} 
  		while (EntityList.getStringFromID(startEntityId) != null);
  		return startEntityId;
  	 }
  	
  	//Register Egg
  	public static void registerEntityEgg(Class<? extends Entity> entity, int primaryColor, int secondaryColor) 
  	{
  		int id = getUniqueEntityId();
  		EntityList.IDtoClassMapping.put(id, entity);
  		EntityList.entityEggs.put(id, new EntityEggInfo(id, primaryColor, secondaryColor));
  	}

Over all my Id's should atleast be 301 or 302 (or jump around if other Custom Mobs are loaded in the world).

Is there anyway to find my Mobs ID to work with the eggs in the EventsContainer?