Good news - Sonja and I (Mostly Sonja) removed and installed the new toilet in the main bathroom on Saturday. The old one was original with the house (circa 1970), and that made it pretty hard to get out. The nuts were rusted down to balls, so we had to lift the whole thing out instead of the tank and bowl. The old one was leaking. We thought it was just condensation, but then it became worse. I was hoping for just a wax seal replacement, but given the state of the toilet, and the amount of work and parts needed to put the old one back, we bit the bullet and got a new toilet, and some more debt on the Home Depot card. They had a HST off sale, and we get a $50 rebate from the city, so it will work out to under $100 once the smoke clears. The wax ring was shot, as expected, but the flange plate was good except for a loose screw which was filled, glued, and replaced with an oversize one. Water damage was minor, and confined to the overlay subfloor. Long and short, a huge worry