Rework drain and replace ptrap under kitchen sink. Customer stated that there was a leak on P-trap under kitchen sink. Took a look and found that at one point there was a leak but also noticed a leak from Insta hot unit. Went ahead and reworked drain and replaced P-trap. Tested by filling multiple times and dropping in no leaks were present at this time. Cleaned up work area. Will send estimate to get Insta hot unit replaced.