scotxxx, any chance you still have that video? I can't get your YouTube link to work. This sounds exactly like the same problem I'm having and my SWG is also out of warranty (even though its only been used for a few months maximum, and with a small pool, so only an hour at a time). Only one of my chlorine terminals is rusted, but I'd like to try what you've described to see if it will solve the problem. I've tried to clean them, the wire connection and the screw. My husband suggested brake cleaner, only some of the rust came off. What did you clean yours with?
Thanks!