Sorry, can't help you with that stuff. I can't even make a simple chain in the setup room so have resigned myself to the fact that some of us IE: Me, are just not cut out for modeling 3D stuff.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi