Howdy, hope someone can give me some advice on this sticky problem I'm having. Just recently the diverter knob (it's a pull-out type) has been sticking a bit, not pulling out all the way. The result is the water comes out of both the tub faucet AND the shower head, at half-pressure from both. It SEEMS to have happened all of a sudden, but the diverter knob/valve has never really been a clean pull. Dismantling the diverter valve looks like a challenge, I'm not sure it will even unscrew from the pipe. Is it possible that the problem is some build-up of calcium or sediment or something? And if so, can I pipe something like vinegar or CLR in through the shower head pipe to try to clean it out? When I work the diverter knob in and out carefully but firmly, I can get varying degrees of pressure.

Thanks for any advice you can give me!

- Doug