Thanks for the input, Rich.

Well, I went out and ran the garage door opener several times, trying
to see if there was a place where the wheels were binding. After
several tries, I heard a loud "snap" and a puff of smoke came out of
the opener. Looks like I ran it one too many times. It still
functions, but I smell smoke when I run it. Never a good sign. Drat
and double drat.

-Fleemo