HI Dan ,
Yes I have . I ran the regular calibration and the vertical column related to Z Axis rotation does not center . I can touch the stick and will change .
I tried FSUIPC calibration and the rudder setting changes constantly .
I am suspecting a worn Microsoft Sidewinder Precision Pro that I have used untold hours . It does have significant rotational play in the joystick of more than 1/8" and less than 1/4 " I would think

It would still seem that the sensitivity settings would have more effect than they do . My aircraft dart from one side of the runway to the other at the slightest touch and is extreme with tail draggers .
I don't understand what one is supposed to do ( if anything ) with the FSUIPC calibration ?? I see it has SET for each movement , but not sure what to do with that or with RESET ?
I do have a newer SWPPro joystick I can try . Should I turn the PC off when changing controllers ? It is in the USB Port and XP recognized it when installed the first time . I didn't have to use the CD like I did with W98 .
Thanks ,
Jamie