My house is 15 yrs old. And I noticed that the water started taking a long time to travel to the shower head all of a sudden last week. This led to a new shower head. And that didn't change anything. I also noticed that the spout was dripping. So we went and got a kit to replace hot, cold and the diverter. After an exhausting evening, we turned the water back on to see the copper tub spout (no new cover placed on it yet) was leaking warm/hot water worse than ever. Not something that can go ignored. My husband and I thought it is was the seat or something on the hot water side that is not sealing off the water to the diverter. We tried several times loosening the seat, tightening the seat, playing with the replacement unit thingy. Water is still trickling out of the copper pipe. Can anyone help us out? We are sooo close! :(

It is either Seat that is rusted and bit of it missing creating negative seal. Or it is the Washer that has is either worn out or has some debris indented into the rubber. Or combination of both.

What kind/type/style faucet do you have ?

Thanks. The seat is brand new. The stem is brand new washers included. The style is cheapo chrome wall mounted in the tub/shower combo. We didn't put the seat in too tightly early on, and found it out when we took the stem back out. The we tightened the seat in and put the stem back in and still have water coming out of the copper spout pipe. I inspected all of the washers and they all look okay. Is the seat supposed to be screwed all the way in?

Yes, you use Seat Removal Tool. Seat screws all the way in. It seats tight in the body. Are you using the right tool ?

We just used a screwdriver. I guess another run to home depot is in order? I know what the tool looks like. Angled, square head. The hubby is in banking, no in home repair. :o

That is your problem. You cannot screw seat in all the way with screw driver. You have to invest in Seat Wrench. (Home Depot / around $7.00).

Seat wrench has 2 sides: Fat/short and Skinny/long. Make sure you use correct end. If both ends are too long for your seat and hit back of the faucet body preventing solid grip - cut off 1/2" of the tip with hack-saw.