Shooting Jack, check your heater for mud dauber nests. In my first tc, my dh found tons of them, hard as concrete and had to hammer away at them to get them out and finally got my heater working. My Shadow Cruiser came with a non-working fridge; I opted to replace it with a new one from ebay. I think the old one could have been saved by replacing the cooling unit, but the new fridge I actually got for cheaper than the cost of a new cooling unit. But it was a real b****h to install. You have to remove (very carefully!!!) the outside flange before it will fit thru the doorway.
Potterjon, looks like someone welded metal pads on the bottom of your jack legs. Mine have tripod like feet that slip into the jack tubes and come out when I raise the jacks. I suggest either cut them off and see if you can replace with something else or else replace the jacks altogether.