I recently camped in 20degrees and the propane heater on my 2019 BANFF ran constantly. I got paranoid that my 5.9 onboard tank (which only fills to 3/4) would run out so i was going out to fill it often. It was a pain. Using the connector for a propane grill, i could reverse the flow and hook up to a 20 tank. But i would have to carry it outside. Does anyone do this?