I'm sorry to bother you all again, i have another problem:

I'd like to morph Michael 4.
I'm able to open him (top pic) , add the morph, and, as in the attachment, add some muscles to him (middle pic) but i don't know how to, for example, enlarge his shoulders. It's like the muscles increase, but the skeleton distances under him remain the same, the bottom pic is what i would like to do (made in PS).

Can you help me?