Thanks, and yes, my brother the plumber installed them when he re-piped the home. I asked him,he told me it was a PFister, but do you think he would come over to assist his older bro? He told me it's common sense,but I told him, if all plumbing repairs were common sense, then EVERYBODY would be a plumber! I honestly have never repaired anything at all in my lifetime. My scope of trade for many years was wallpapering,and painting,I even replaced a few toilets in my day, but as I recall, I've never dealt with shower valves before.
So IF,.... I can find this faucet wrench set to remove this arm,tube,whatever this thing is called, connected to the big nut, then I can replace the 0-ring?
In removing this nut.....Could I somehow loosen anything inside the wall that could later on damage the interior with water leakage? In other words, is this big nut removal easy to do? If I can't afford this special wrench set, would regular channel locks work? Or wrench set is better?
Someone told me I did not have to remove the plastic nipple (that threads onto the trim) Then said something about going through the inside with a special smaller tool to remove ONLY the 0-ring? Do you think they mean through the small stem, or through the inside of the now exposed bigger nut?
They are right.....Plumbers say..... "Your poop, is our bread and butter"!