Hi I'm installing a new moen Kingsley diverter tub spout and it leaks out the back. Allen screw was snugged enough to cut into the pipe. I checked the o rings and they look ok.
Do I need some sort of sealant or lubricant here?
Will tightening the allen screw a lot help? I am worried it will punch right through the copper pipe. Could i grind the screw shorter so it clamps the plastic rings without cutting the pipe?
Or is there something else that I am missing?