Ok I have both a leaky faucet in the tub and the shower. They are both Moen faucets. It is the kind that just has 1 knob and you turn it either way depending on whether you want hot or cold. I have taken off the decorative stuff. Now I am not sure what to do???? Can someone please help me. I have inlaws coming in on Monday and I need to fix this before they get here. This will have to be pretty detailed cause I have NO clue. Thanks so much.