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While packing up to go home while camping in our 2020 Heartland Bighorn I was washing out the black tank and I started to smell sewage, which I had not smelled before. I began to look around to find the source of the smell, when I noticed water running down the wall of my downstairs storage...

We have a 2020 Bighorn Traveler and I believe the drain valves were incorrectly installed. The black tank valve has to remain open to drain gray tank #1. This is our 2nd RV. The black tank valve should be allowed to remain closed when opening either of my two gray tanks. Heartland is refusing to...