I purchased a new Wildcat with a 9 cu ft fridge specifically for boondocking in Colorado at 9,300' only to be crushed when I read the operating above 5,500 ft on electric. Looked at what that would do to my two group 27 batteries and an inverter. Fridge only draws 3 amps on 120 volts = 27 to 30 amp hours on 12 volts. Not a good solution. Decided to just see if my fridge would run on propane at 9,300'. My fridge ran fine until I ran out of propane and put on a new bottle.
After much thinking I realized that I normally keep a propane gauge on the bottle I usually use to run the fridge. I put the gauge back on and it worked like a dream. It seems that the gauge lowers the propane pressure just enough to keep the mixture from being too ritch to run. Only other problem so far is I don't have enough pressure to run the oven and a stove top burner at the same time. May seem like an easy fix. I would like to claim being smart but lucky I will take credit for.