re: Leaky Bath Faucet - Attempt to Repair or Call a Plumber?

If you can't get the bonnet nut off by twisting with average force, don't try to use your muscle to untighten it. Either call a plumber, or get a large set of slip joints to bend it or crack it free, then replace the trim kit.

Trust me. Otherwise you can break the copper supply lines and end up with a shower remodel on your hands. Or so someone told me...