I am installing a new shower arm. It screws into a cpvc fitting in the wall and I can't rotate it so it faces downward when it bottoms out inside the fitting. I added an extra layer of teflon tape but it still faces upward. How many layers of teflon tape can I add. I have used 3 layers so far. I am afraid it will leak unless I snug the shower arm fairly tight but the arm faces upward and not downward when snug. Any help is appreciated.
Marty