Great service, I too feel that I would get that kind of service from my selling dealer. I have a phantom issue with my mixing valve, but I can deal with it. One time I had hot water come out from the cold water tap. I think we had a pressure surge, then after the surge the supply dropped. With much more pressure in the water heater it popped the mixing valve the other direction and gave me hot for a short period. That can really make you think you're crazy when you can't replicate it 2 seconds later.
Is this the first issue you've had with it you mixing valve?
