Hi
I recently have been plagued with the same issue with my Saitek Combat rudder pedals as mentioned in this thread. I undertook all of the fixes mentioned in this thread and still had the spike. Even though in the windows control panel no spike could not be found.
However I think I have found a solution and after a week of testing with no ill effects it has seemed to have fixed my problems.
Possibly this may help someone alleviate the same issue that I had.
I adjusted the toe brake axis to the following.
Left Toe Brake
Right Toe Brake