I just installed a new granite sink and drain in my bathroom. There is a bad leak under the sink coming from around the "gasket ampaque joint". The one that came with the drain kit seemed almost too bit to fit in the sink drain hole so I bought another one with a little different pitch to try for a better seal.....no luck with it either.
Should I try using some sort of caulk or maybe "sand" down the bottom of the drain hole incase it isn't totaly smooth?
Any advice would greatly be appreciated