My analog control starts in the top left position (although if I move it with the unit off it moves freely as it should). Example, MLB 07, When I am ready to throw a pitch, the ball icon is over the right handed batters head, I have to move it to the strike zone, if I release it, it goes to the top left again. Should I return the unit? Or open it up and investigate? Also, how hard is it to install a new one?