[wingnut60]

Sorry that I forgot about that valve--it is a 3-way in that it never shuts off flow--all way to either stop is hot or cold, and anywhere between is mixing cold with the hot to keep water cooler if too hot, as DSI does not have temp adjustment.
Get a 2 or 3' level and lay in floor near door. Use that area to check level, don't depend on your lying eyes....level side/side, then front/back. Marbles and ball bearings will tell a real tale, and to some people, the trailer is level when the bathroom door stays put or swings slightly to closed.
Did you say you had the auto-level? or manual?