I must defer to Dan Wilson and Spencer Chase for their vast improvement
on my suggestion of covering the end holes with "Magic Mending" tape.
I did specifically warn that one should not leave the tape on, implying
that one does not want to sticky things up!

But Dan and Spencer espouse using a better kind of tape, or better yet
small plastic sheets, taped not onto the tracker bar but above and
below it.  A classic solution, grounded in simplicity and ease.

One of my hero Thomas Edison's slogans was: "There is a better way.
Find it!"

Thanks for showing all of us -- me included -- a better way!

Lee Munsick
Appomattox County, Virginia USA