Report "Problems with drain system on Hansgrohe Tallis s single hole faucet!!!! Almost worn drain at all now. My husband has checked pipes & traps and they seem to be clear. What can we do about this problem? We have had them installed for a year & this is the 2nd time it's happened! The 1st time we got a plumber in & he fixed it very quickly but refused to tell me what was wrong. Any ideas out there?!!!!!! Thanks"