I have two or three gold filled cases that are in good condition except that the backs are cross-threaded and difficult or impossible to screw back on. Is there a way to fix the threads?

Buster Beck gave great instructions dealing with this question in this thread.

Thanks, Jim. I hadn't read that thread. I didn't realize "a pig in a poke" dealt with cross-threading.

I read it, and found some really good information there. Thanks Buster, and Jim for pointing it out.