The copper supply line for my toilet is not clamped to a stud - it can be pulled out from the wall a good 2 inches. Is there any type of clamp that can be used to secure the pipe to the drywall? I'm thinking that it would have to have a center hole with teeth going only one way so that it could be slipped onto the pipe and then fastened to the drywall with anchors or preferably a stud behind the drywall. I was trying to replace the old shutoff valve with a new quarter-turn. If there is a way to secure this pipe, I should do it before putting on the new valve.