Replaced all 3 valves in tub. When the cold water is turned on 100% diverts to shower head or the tub(works as designed). When the hot water is turned on (cold off) about 20% of water comes out to tub while the remainder goes to shower head. If diverter is turned to tub it works as designed. What do I need to look for to correct this problem?

I had the same water still going out the spigot when the shower was on problem.

I got a replacement kit and the new stem still had the same symptom.

I was looking online and found a picture of the part that showed two o-rings and a rubber washer. My unit just had the one o-ring and the instructions didn't say anything about the second o-ring.

It turns out that second o-ring is the solution and the old unit had the o-ring fail so it was just in tiny pieces when I took the thing apart.

I found that missing o-ring in the bottom of the bag of the replacement kit and it works great now.

Good luck!

Jon Boyd
Ann Arbor real estate Exclusive Buyer's Agent