Had a problem since day one of moving into the condo. I have a 3 handle setup in our shower. The center handle is the diverter that when turned redirects the water flow to the shower head. It does but water is also still pouring out of the faucet. It's overwhelming the drain to the point that the tub gradually fills with water while showering (making for a grimy looking tub). I pulled the valve and had it identified as a Price Pfister (PF stamped on the valve assembly). I opted to replace the entire assembly rather than just the washers. The new valve looks identical to the one I'm replacing. It screwed in fine and the handle went on like it should but no joy. Still have the same problem even with the new valve. What else do I need to look at/for ?