I am still having major problems with my noisy pipes. Now i find that when I turn on a faucet and the loud humming noise starts, if i turn on any other faucet in the house, the noise will stop. Once i turn off the faucet it makes a hort humming noise again. What is this? We had a plumber out who thought it was a toilet, but when the noise happens i turn off water to every toilet and it still happens…HELP!!