Sorry, Erik, but I missed the part where you described your own experience. All I heard were suggestions of how my observations might be wrong. I certainly appreciate your good-heartedness in appointing yourself my personal Buddy (and now manners) guru, but if you can't bring yourself to take my questions seriously... or even if you just don't find me appreciative enough... you really aren't obliged to comment at all. I'll muddle through somehow.
That said... I have no reason to believe this is a malfunction, and slowing down that far isn't a solution. Like I said, I'm really just looking for thoughts on the best strategy for making a fine calibration adjustment.
Gerald may have had it right... this may be something I need to take to a larger pool than just this Buddy sub-forum.