I placed the deep rough-in kits on both my shower and bathtub and the shower one will not stop dripping. The valves are American Standard single handle "R120?". The bathtub has a different manifold than the shower, see pictures, and I don't know if that is the reason the shower drips and the bathtub doesn't. The bathtub manifold is plastic with a metal ring and the shower manifold is completely metal. I swapped the extension and cartridge from the bathtub and placed it on the shower valve and it still drips. I then bought a new cartridge with new rubber washers and have the same result. I then removed the extension and mounted the cartridge directly to the manifold and there are no leaks. It could be that the extension is the wrong part for the shower valve, however I purchased the valves about 6 years ago at the same time and thought they were the same. Also, both the shower and bathtub cartridges appear to be identical. I even torqued down the screws so tight at one point, to stop the drip, that I cracked the plastic case on the cartridge. The American Standard deep-rough in kit P/N is 060213-0020A and was used for both valves.
Pictures are at the link below:
http://new.photos.yahoo.com/album?c...hTF_9u.42xXSYEl6pyAeg--&ts=1169077644&.src=ph
Pictures are at the link below:
http://new.photos.yahoo.com/album?c...hTF_9u.42xXSYEl6pyAeg--&ts=1169077644&.src=ph