When the hot water on my garden level shower is turned on at a moderate flow everything is ok. As the temp increases the flow starts to drop off and the pipes start to vibrate. If your turn up the flow everything is ok. If left alone the viberating gets worse until there is a hard bang and the flow stops. Turn the flow up a little and the water comes out fast and steady. f you adjust the flow down during your shower the samething happens. It only happens on this one faucet. Thanks, Higgs.