Now that I've solved my 'hot-water-out-of-cold-taps' problem (by removing the single-handled shower fixture), I'm a little reluctant to put in a new one. If I put in something with separate hot & cold taps, what do I use as a feed for the shower head? Somebody told me I was looking for a 'mixer'--is that what I ask for at the plumbing store?

This time it's the bathtub faucet. It's a standard looking faucet about 6 inches long. Shower pull-up on the end closest to water outlet. There is a small semicircular cut out on the bottom of the faucet where it meets the tiled wall where you'd THINK there'd be a screw or nut of some kind - but no fastener of any kind! I tried twisting the faucet - but stopped when I heard pipes rattling and groaning inside the wall! :o The problem with this faucet is that the gasket on the shower pull up no longer seals - period, and there is always a flow from the faucet simultaneously with the shower head. It's a real waste of water but I hope removal and replacement of the faucet doesn't require demolition of the tile wall - I'm clueless back there! -Jack