I recently had a dripping faucet in my bathtub. I replaced the faucet stem and washers as the old one was in bad shape. The problem now is I have very low water pressure out of the hot water faucet. The hot water faucets throughout the rest of the house are fine. It is the bath only. What do I need to adjust? Your help would be greatly appreiciated as I have not been able to find an answer in any of my home repair books.