Hello experts! I've isolated the leak in my upstairs tub to the drain itself. When the tub is filled a few inches with water, I can actually hear the water dripping down to the drywall (now wetwall) ceiling of the first floor living room. We've had several plumbing issues upstairs and one thing I regret is our decision to locate our washer/dryer upstairs. On the spin cycle, it literally vibrates throughout the whole upstairs... which can't be good for the plumbing seals and such. Anyway, I was wondering how or if I might remove the drain from the tub to replace it/reseal it? Can it be done? What tools are needed? What sealant should I have ready?