Jim,
The last time I checked the group that originally owned Classic is still in business at the same location in Sturgis MI.
They kept the land and buildings when they sold Classic to the guy that is in jail now.
The company is called Neo Trailers. I have no idea if they work on the Classic trailers or not.
https://neotrailers.com/
Good luck, please keep us posted on what you end up doing.
Bill