get a shurz-a-peep and take out
that one you have that needs rubber
tubing to pull it around on draw.
i did away with that crap years ago
after snagging tubing on limbs, etc.
ask an archery shop what they sell
the most of in that kind of item, and
they'll tell you peep sight replacement tube.
toss it-fix it-forget it
and make sure whoever serves it in
knows how to do it right. you don't
want the serving to come undone in
the middle of the blessed woods.
good luck