When you encounter problems, expect support to ignore them. I've had it for 10 years now and as an engineer I have to say it's a terrible mechanical design. Eventually it will leak and ruin the ceiling in your RV. Mechanical parts are made of plastic. Once the little o-ring fails, you get a ceiling leak. All they had to do was make a rubber boot around the roof block to prevent water damage. A properly constructed unit is the "Jack" manufactured by King Industries. I drop it and bet "Jack".
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