Pokémon Model Ripping Project

[Yunpol]

I know this may not be the right place to post this, but I really don't have the choice as there isn't a Gmod section here.
I have already posted this on Facepunch, but they didn't really help me out that much.
Anyways enough of rambling. Lets me just get this straight.
For the past few days, I have been trying to figure out why the model is acting like this.

So far, I have failed to find the solution to this problem and I need some help in figuring out on how to fix this stretching problem.
If anyone wants to help me out in this issue, just send me a PM.