Big foot leveling system

[fmf421]

I have 04 sunsseeker. The leveling system doesn't work. Quasar the maker says it's the panel or box under seat but they stopped making that system and I will have to spend 700+ to buy the newer version of the panel board harness and box to go under seat
First off does any one have a still working panel or box they don't use?

Second. Does any body have any ideas I could try. Not sure if forest river would still have any old systems somewhere.

Thanks

Mike