Leaky P Trap

[look 171]

Where the tail piece meet the p trap, there's joint there isn't design to hold water. I suspect it all along that the rough in drain dimension is too high holding water there seeping through that joint. Extend it with ABS, and make make that connection way up near the sink and your leaks will go away.

[dad911]

Originally Posted by jyl

Closing the loop.

The problem is that the drain is placed unusually high up on the wall, ........

Like WD said, cut the tailpiece.

Post a pic.