I'm putting this problem to rest for now. It's most likely a grounding issue. Camper World here in Myrtle Beach could not even look at it for three weeks. They recommended a local guy who doesn't work on chassis problems. He recommended a couple of garages, who after learning that they must contact Thor before and during any work on the MH; are finding it hard to get me in.
Bottom line: I crawled in, under,and around everywhere and tightened anything and everything. Everything is working fine now. I can't be certain if I did it or it just dried out.
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