LRod wrote:

Have you checked to make sure there isn't another set screw under the
first one? Take the set screw all the way out and look. Sometimes a
second screw was added as a "lock screw."

Eureka! A way to keep my Nova Comet pulley set from coming loose. Now why
didn't I think of that? Thanks, LRod.

--
It's turtles, all the way down