Newly installed tub spout leaking by wall
I just installed a new tub spout / diverter and it is dripping from the bottom of the tub spout when I turn the water on.
I have a half inch pipe coming out of my wall that is approx 3/4 of inch in length and the tub spout screws on. The one I purchased is this one: DANCO Tub Spout-Back Diverter Model 80765X. The is a shower/bath tub with a GROHE single handle knob.
I used some CLR on a rag and a couple rubs with steel wool to prep the pipe before installation. I also filled the hole between the pipe and the tile surround with bathroom caulk. I used Teflon tape on the 3/4 in to 1/2 in black plastic adapter that came with the tub spout and again on the pipe. I tightened it by hand as tight as I could get it.
The drip only occurs when the water is running from the spout and for a little while after the water has been turned off. Any suggestions on troubleshooting the drip from the new tub spout?