problem with egg collision (solved)

I converted a maya file into an EGG model

then i converted the model into a collision volume using {polyset descend}

the strange thing is that my model keeps sliding off in the left direction when the collision occurs between my environment collision volume and my character

I will try to post the script when i can

but for now, in your opinions, is this a problem more likely with the EGG file or the way the collision is implemented in the panda/python script?

Edit: never mind it works now