I had a plumber come to my home to change out the cartridge behind the handle where the water turns on; for the water flow in my tub/shower. (water was running slow, cartridge got clogged)
I now have a leak at the location where the L wrench goes in to remove the tub spout (beneath that knob) He removed this also to replace the cartridge.
Is this normal or did he not perform the job correctly??