We had a CT13 for several years, did a lot of work on it, then
sold it when we bought a
Casita 17. There was (probably still is) a good facebook group that has a lot of good information. Start by looking in the "files" section there for common problems to see if any apply to yours. I
sold off all my spare parts except a used window, door latch striker, and bearing hubs. Many parts are either unique to the Uhauls or no longer in production.