The faucet drips and I cant figure out how to make it quit.
It can be repaired without taking entire valve out of wall. First shut water off and remove handle. Next you will see a collar that will screw off to remove the cartridge below is a link for a single handle moen faucet. Check it out to get an idea. If you know your model you can research on line ,but they are close enough to give you an idea.
Once appart replace washers or o -ring's. Pay attention to how you take it appart for easy reinstallation.
This link is aparts breakdown of a single handle faucet.
This site is installation instructions.
This site you can enter you faucet model to retrive information. Read More At : & One Handle Tub & Shower Faucet...