Thanks for those links Del. I'm travelling again and won't be able to look at it til this weekend at earliest. I did look over the links though and nothing jumped out at me as being related to my problem, which is:
As soon as I applied pressure in either direction on the rudder axis, it starts spiking wildly- I cannot hold a steady turn. This happens on the gaming rig I built and have a Windows 7 release candidate installed on. (Haven't upgraded to the pay version yet). I tried installing on my personal laptop which has Vista, and that problem doesn't occur - the axis is steady as a rock.
It doesn't seem to be a calibration issue - it finds the center OK if I release, and if I apply and hold full deflection either way, it does reach reach the top of the scale and stay there. Interestingly, same problem happens on the toe brake axes, too.
