Sherry doesn't like the knobs on her shower.
Hmmm. This is not how it worked last time. It appears that I now have a open pipe directly connected to the water main. The water is coming out more forcefully that I have ever seen it come out of a faucet. About 100 gallons per minute. Fortunately, it is going into the shower.
Back outside to the main cutoff. Open the main cutoff. Back inside to check the result.
The shower is running now. Seems normal. I twist the knobs. Nothing happens. The shower just goes on running. I try both directions, in all combinations. The shower just goes on running.
The only way to stop the shower is to cut off water to the entire house. I am starting to have visions of checking into a hotel while we wait for a plumber.
Back outside to the main cutoff. Close the main cutoff. Back inside to try something else. The only problem is that I don't know what I did differently that caused the values not to work at all.
I remove the valves and disassemble them again. Try to use logic. What determines whether these valves stop the flow of water or permit it to pass through? It's not obvious. Try something.
I reassemble and reinstall the valves.
Back outside to the main cutoff. Open the main cutoff. Back inside to check the result.
Mercifully, this time the shower is not running.
I try the valves. Each one starts water running when I twist it. Unfortunately, I have to twist the two knobs in opposite directions to open or close the valves.
Acceptable solution. I am greatly relieved to just get the system more or less back to where it was when I started.
The old round knobs no longer seem so ugly.