Norcold 2.7 cubic ft. 3 way fridge wont stay lit on propane

Any other precautions regarding pulling out fridge hopefully only enough to work on the top of the fridge? Norcold manual says to Disconnect battery, shut propane tank valve off, bleed out propane on stove, disconnect propane near shut off valve, remove AC plug, disconnect dc wires from fridge, and remove the screws that fasten fridge to floor, and take off fridge door. Am I missing anything? Do I need to worry about the combustion seal?.. around the fridge mounting flanges...WHEW!!