Homeowner wanted widespread lavatory faucet replaced in hall bathroom. Found sink draining slightly slow if you filled it up. When doing a small courtesy drain clean The clog got worse and completely stopped up the lavatory drain . Attempted to clear with flex shaft multiple times with no luck Ran flex shaft through roof vent to clear blockage. Replaced homeowner provided toilet seat and hall bath. Replaced flapper in the toilet as a courtesy due to the chain being too short and getting kinked often. Tested all repairs and replacements with no leaks or failures at time of service.