I have had some experience with issues similar in my last tt. It could be the elevation. Does the fridge work on propane consistently when you are at lower elevation? Is the stove near the fridge? Light the stove and see if there is consistent flow of propane. I had one tank where the valve was having issues and anything running on that tank would not work properly. If there is air in the line or you have a tank that sputters, the fridge will not stay lit.
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