Originally Posted by plummen
replace the o rings inside the stem,or just buy a new stem.you shouldnt need to go into the wall any further than unscrewing the stem
So far pretty good. The stem came out with little effort pulling it from the top of the tub. Went to the HD and could not locate a replacement. The guy there also looked carefully and couldn't find one. It was really badly loaded up with calcium and he took his time to clean it as best he could with a box cutter. We both thought the o'rings looked pretty good and decided not to replace them for the time being. I bought some water proof grease to goop them up with.
It is now pretty well freed up but I believe the best think is to get a new one. Problem is what is it and whom to order from. Can you help me identify it. If it helps, the overall length is 5-1/4" and the water flow seems to be controlled by piece of ceramic that can rotate 1/4 turn inside the stem.
The house was built in 1991.
Meantime, it is back in and working silky smooth. Thank you all.