PS3 controller right analog stick calibration

[andr1y7]

Hi, so i've been wanting to play some gamecube games with my ps3 controller and basically I can't calibrate the right analog stick. I've been using motioninjoy and i've tried using the game controller panel to calibrate it to no success. The left analog stick works great, but the right one goes in every direction but the correct one when I try to assign it. Any idea what to do? Thanks