I have the one faucet Kohler shower faucet (K-T10277-4A). It is round and turns only left. The farther it is turned the hotter the water. Just recently the hot water stopped working properly. I can't get warm water only HOT or COLD not much inbetween. Can you give me a diagram to show me what I need to do to adjust the temperature? The hot water in the rest of the house is working fine so I know it is not anything to do with the hot water heater.