Z Rotation

Please can someone help me, I have 2 Microsoft Sidewinders. ! as force feedback and the other doesn't. For some reason, the rudder is always making my craft go left on both Joysticks. Its possible, but I can not see both of them being faulty. Does anyone have an idea who to rectify this. I hace tried to calibrate them both, several times, but this does not seem to work. It drives me bonkers when trying to fly helicopters!!!!!
thanks in advance
mark
thanks in advance
mark