I recently bought a 1931 home. There appears to be something wrong with the faucet system in the tub/shower. The hot water line appears to have low pressure compared to the cold water line. It looks as though the water supply lines were replaced with copper so I wouldn't think it was a corrosion issue. The faucet has a separate handle for hot and cold as well as one to turn on the shower. In order to get a comfortable temperature I have to turn the hot on all the way and barely turn the cold on. Could this be a problem with the valve within the cold water handle (It appears to be old), water heater, pipe sizing?