I just recently replaced an old tub faucet with a new Pegasus k300 series thermostatic faucet. I now have very low water volume and the water does not get very hot. I initialy thought it was a defect with the new valve and returned it to the store for another. I installed the new one with the same results. All my other faucets in the house are fine and the faucet I replaced had good volume. Is this a defect in the valve or some other problem? I appreciate any advice. Thanks!