I have a Moen problem, too
Hi, I'm new here, and am just a do-it-yourselfer, not a plumber.
Yesterday I replaced a Moen positemp shower catridge that had been dripping for a month or so, then suddenly started leaking in more of a light stream. The old cartridge, by the way, was VERY hard to remove--I had to use a small pry bar and wooden blocks to gradually leverage it out.
I put in the replacement cartridge and the dripping stopped, everything seemed to be working fine. But now today, less than 24 hours later, a slow but steady drip has started again. Any ideas on what the problem could be and how to fix it?