The middle handle that switches between faucet and shower just does not stay on. The inside is dry rotted and frankly it’s just old. I have seen replacement handles, but it looks like they use a screw versus a clamp (and even if it was a clamp, the post it clamps too is also just old and losing shape). Am I limited to fixing this by replacing the whole valve stem system? I have found various videos that say to turn the water off, take off handles, take out valve stem (using a special tool?), take to hardware store to find the replacement and then move in reverse. Any other advice?
I’ll try to figure out how to add pictures from mobile. (Edit to add: https://imgur.com/a/1o9tH25)
Another edit: I took apart one of the handles and have these parts, which look a bit different than what has been shared so far: https://imgur.com/a/sCLxIaX — any followup insight?
Royal_Acanthisitta51 t1_ja88mrc wrote
You need to replace the whole cartridge.