Jimmie D wrote:
32, at least, year old Moen single handle shower controls leak. Can I still
get replacement parts for them.

Most likely...the guts tend to have remained the same. Depends, of
course, on what is actually leaking and why..

As for the advice about replacing it just because it's old, disregard
that. Have a houseful of single-handle faucets that are at least that
old and they're all just fine. A new cartridge and/or the o-rings and
replacable seats takes care of the problem.

If there is some lime buildup making them somewhat difficult for
initially dissassembling them, then some hot vinegar to help dissolve
the scale will do wonders.