Arrived on site to possible call back. Upon inspection leak was coming from the strainer. Client stated they had a Christmas party and used lots of hot boiling water and strainer started to leak. Removed strainer and put putty back and tightened down all the way this time to ensure no leaks this time. Tested the strainer by filling and dumping with hot water multiple times and put paper towel underneath to show if thief were any leaks. We also used boiling water to see if it would leak. There were zero drips this time as we were testing and everything is now draining as it should.