Howdy folks. When I turn my shower on, I have to turn the water all the way to hot, switch the shower lever, and then adjust to warm... otherwise I get a huge loud knocking sound from the basement. I went down to see if I could see pipes rattling or anything, but nothing. I turned on the faucet of my utility sink down there and the noise stopped. Any idears how to fix or what's the cause?
Thankee!
D