Our kitchen sink faucet, a separate control handle and faucet, has developed a leak. When in use the faucet has water coming up and out the top that pools at the base. When not in use there is no leak. I took cap off exposing an allen nut adjuster. Tightening it makes no difference to leak and just locks down the swivel movement of the faucet. Is there another adjustment on this to stop the leak?
Thanks folks.