[Jake M]

Perhaps I should have mentioned that I'm using Kevin Watson's background gyro code (gyro.c and gyro.h) as well as Kevin's ADC code.

And although the gyro is turning slowly and not at a constant rate, that shouldn't make much difference, since I'm the one turning it both times and I've been taking care to be consistent in that respect. Plus, since the individual sets of numbers (clockwise and counter-clockwise) are so consistent, that suggests that the error is internal, not external.

I just thought someone with more experience working with the gyros might have come across this before.