I recently purchased a Rockwood 2280 pup and am in the process of sanitizing the water tank (black stuff visible in tank bottom). I added the bleach solution and opened up the faucets and then the shower heads to get the water running through all the lines. The 2280 has an outdoor shower and when I turned on the hot and cold water knob, water was leaking from the knob area. Same thing happened with the inside shower. I can see behind the fixtures where the water lines connect and those aren't leaking, so it seems to have something to do with the actual fixture. Theres a cover on the fixture that I'm not sure how to take off and thats where I need someones help. I feel like it should be simple, but I don't want to wrestle with it and break it if someone can just tell me how it comes off. Thanks!