I made the custom render have oppacity. But for somereason the oppacity only loads in the creative inventory. When I take it out it looses its oppacity. Still doesnt have oppacity after I place it down aswell. Picture (top and bottom slots):

Is it a ISimpleBlockRenderingHandler, a TileEntitySpecialRenderer or just a transparent texture?

@SanAndreasP Transparent Texture

If the texture has a transparency to it you need to include these in your block file.

public boolean isOpaqueCube()
{
	return false;
}
public boolean renderAsNormalBlock()
{
	return false;
}
public int getRenderType()
{
	return -1;
}