Q: I'm an expert handyman at home, but I'm stumped by a plumbing issue in my shower. We want to remove our old three-handle shower valve and install a new one-handle tub/shower valve with scald ...

Dear Melissa: This is a very common problem when your bathtub has the old two-handle (hot and cold) shower valve. When a toilet is flushed or the cold water faucet in the kitchen is opened, the ...