I have a Thomas 52349 405ADC38/12 and replaced it about 3 years ago for $189. I kept the old one to rebuild. The rebuild kit #650571 can be purchased from Kershaw Automation for $72.
Why do you need to get a large pancake compressor because I guess it only runs the toilet and the floor slide at the entrance.
I have yet to rebuild the old unit, but why wouldn’t that compressor fit into the generator compartment a lot easier?
I think I’ll post the same thing on the “Stuff” channel and see if I get a reaction.