Customer stated there is a leak coming into ceiling of basement hallway. The upstairs hall bathroom shower drains slowly and master bathroom popup not working The basement hallway goes into crawl space area where I can see above the basement bathroom where the stain is showing found a nut on the waste and overflow was never tightened. Had to cut a hole in the ceiling of basement bathroom to reach the waste and overflow because I could not get to it and was viewing it through my phone camera. Cut hole in basement bathroom to access the waste and overflow. The nut was not tightened due to the wooden beam beside the waste and overflow preventing gasket from being tightened. Chipped out small piece of the wooden beam and tightened waste and overflow nut. Also found staining in the subfloor from beside the tub. Upstairs the baseboard were slightly stained as well as the caulking around the tub was old and broken. This could also be causing a slight leak. Informed tenet to be careful get