uneven drain hole in new bathroom sink with pop up stopper - how to stop leak?
 

installing new vanity with porcelain sink and pop up stopper. all of this was preassembled. once plumbing connected there were 2 leaks. 1. around drain in sink - disassembled and found sink hole uneven. 2. pipe at bottom of pop up has small crack around threads. How can uneven drain hole be made up for?

Plumbers Putty.

Either that or silicone, but anything beyond the normal of unevenness will spell trouble down the road.













Northern Kentucky Plumbers

Actually, I'd return the sink and get my money back or purchase another one until you find one that doesn't have that defect.