Frosty's Mom
OK, I can see where you had to get someone to work on it nearby. Hope the fixes you mentioned work and your back on the road again. Good luck.
We had a 2002 Southwind with the Workhorse engine and never had a problem with it overheating. It didn't matter how steep or long the grades were, it ran fine. Our previous rig had the Chevy 454 and it overheated all the time on grades. I finally installed a full Banks system and that took care of the problem. Always something going bad with these houses on wheels.