I have a Moen tub/shower that will not stay off unless I fight with it for a few minutes. I removed the plastic handle, which was slightly broken, and replaced it. Unfortunately, that did not fix the problem. What happens is that when I push the handle toward the wall into the off position, it will start slowly pushing the handle away from the wall all by itself. Once it slowly starts moving, it will gradually gain speed and then the water will blast out. I then will push it back off, and after four or five times, then the problem stops. However, there have been a couple of times when the water was running for several hours until I came home.

Does anyone have experience with this? Please help!