I have an outside faucet that starts to whine (a medium pitched “Hmmmmm” sound) when under pressure. Free flow, the noise goes away, but if I put a sprayer on the end of the hose, the faucet starts whining again. No vibration or hammering, just an annoying, annoying, annoying whine that I can hear all the way back into my house. Hopefully this is an easy fix. Can someone help???