When the bathroom in the primary (formerly master) bedroom was remodeled 20 years ago, I had the contractor put in a closet access panel behind the shower valve. I knew that someday the panel would be needed. Today is that day.
The plumber should be here in a couple of hours. He said it looks like an O-ring failure.
Exciting Update: It’s fixed. As I suspected, the plumber who worked on it about nine months ago screwed up. I also suspect he may have done a lousy job deliberately because he was pissed off that I ended up not needing him for the dishwasher installation. The new guy I’ll be using from now on showed me exactly what was done wrong.
If only the contractors here were like the ones I found in Phoenix.
It’s so hard to find good contractors. And such a blessing when you do!