FIXED fridge!!!
I took it to an rv shop & they would not touch it due to liability, but they did explain how it was secured. The bottom of the flue has 2 wings that a part in the burner box turns on & locks all into place. That part was still decent though rusty. One of the flue wings had rusted away & the other was weak. So the burner box had dropped away from the flue and was moving. The push rods from the interior buttons were not lined up.
I was able to get that part to latch onto the 1 flue wing and turn it to latch into place. But it is weak & would not hold up to the interior buttons pushing. I mounted a 90 degree bracket (which I had to open a bit) to the burner box with a bolt and then screw into the bottom. It is very solid and on the 1st try the piezo lighter lit the propane burner - sweet!
I would have replaced it with the new model, but with their electronic controls running on propane would draw 1.5 - 2.5 amps, way too much for my boondocking. This rm2310 draws noting on propane.
These pics are with the burner box cover removed. It is back on now.
This shows the part that locks it in place.
This shows the bracket securing it:
Hope it lasts.