Originally Posted by korkiley My Moen shower faucet was leaking and I followed the instructions here and easily repaired it. At first, I was confused by the black plastic removal tool that came with my genuine replacement cylinder. Since the instructions didn't describe the part, I thought it was part of the cylinder and, until I realized it's purpose and used it to turn the old cylinder a bit (I guess it just loosens things up a bit because there are no threaded parts.) I was unable to remove the old cylinder. But once I ...