Can't find any parts info for 2007 Skyline Rampage 337

Mike have you contacted the factory at all? My guess is they were of no help, but if not worth a try. Next place is to start with the RV junk yards. Sadly that Skyline Toy Haulers were not very popular so it's going to be hard to find the parts. Hopefully though the parts were shared with other Skyline products and you can find them still.

I would look for markings on the product to see who made them and contact them of a dealer to get those parts, most are pretty generic.