We owned a zinger from 2010 new off the floor. When I had issues, I waited until they accumulated then pulled the camper up to the CR facility in Indiana and let them fix the items needing repair. I am not sure if they do this any more, but it was a great experience to see where and how the campers were made and meet the people of CR. If that's not an option, sadly you have to find a new repair shop or take it on yourself. We are all here to help if you want to try anything on your own. I couldn't get my dealer Couch's Campers in Ohio (which has since closed) to even order a ladder, so I can't image them handling a repair.
2003 Ford F350 Dually
2010 Zinger 31SB