I'm a die hard pc gamer but I pulled out my old ps2 last night and found something... I have a crappy china playstation 2 controller that I really like the shape of but it's pretty bad quality... It's the only wireless ps2 controller that looks identical to the wired ones so I really want it to work. The sticks are more sensitive in one direction than the other, a bit choppy etc. so I was wondering if it's a chip or something causing this or if I can just solder some new potentiometers on it? And how would I go about buying some that I know are quality? They aren't worn out, I remember I stopped using it because of this reason and I had the same problem on a chinese PC controller too.