This faucet makes a thumping sound when in use, sounds like the diverter valve opening and closing. Water drips from the spray head when it makes the noise. I thought maybe there was air trapped in the faucet somewhere but can't get it to stop. Very annoying. If it continues I will have to replace this faucet. Also the baseplate is barely large enough to cover the holes in the sink and the supply tubes are very small diameter and short. The existing supply lines just made it.