My Marvel vs. Capcom 3 fightpad's thumbstick is broken, can some one help me fix it?

It's the Special Edition fightpad PDP released, and it's not working right. The thumbstick seems to be having an issue reading the down-forward input (Or 3, if that's more your speed.) Some times it acts like it has a lean in it, other times I can't do things like crouch block or charge 3 in Street Fighter. Before I crack it open and wing it myself, could some one out there tell me how I could fix it less invasively, or if I just need to buy a new pad?