Those types of fixes are always fun, aren't they?
Sounds like either the chassis halves were screwed together too tightly or something was not quite lined up properly. I guess the important thing is that it is fixed.
You make a good point here. It's possible that, whoever had this before me might have had it apart, and over-tightened the screws. I purposely backed off on those screws just a tad while re-assembling it, so maybe that was the problem after all. Guess we'll never know for sure...
Mark in Oregon