I beg forgiveness in not posting this sooner. I’m again comfortable with my miter saw’s ability to cut straight and square. I can’t trace the problem to any one issue, so one or more of the following seem to have done the trick.
(1) I rectified (to the best of my ability) a turntable that was high on one side (see a previous post).
(2) I cleaned, aligned and adjusted everything but the internals of the motor.
(3) As advised (here), I replaced the two arbor thrust washers and the arbor nut.
(4) In an effort to avoid the introduction of unwanted defection, I’m being careful about my hand and arm motion as I pull the saw down through a cut.
As an aside, and during the rehab process, I took a pretty close look at a number of today’s power miter saws. It’s easy to see that there are designs out there that pay much more attention to rigidity and effective adjustment. With that, I’ll keep using this rather fussy saw until the next time it demands as much attention as this last episode. Then… a new saw will be the cure.
Thanks for all the help.
Ed