Thanks for that Lisa. I'm not sure how Thor determines what a dealer is. Thor's website searches dealers and service centers separately. They list the closest dealer to AZ is in San Marcos CA. They list numerous service centers in AZ, so I guess I'll check those.
I stopped in the Avondale Camping World to check their parts dept last week to inquire about my part (no go) and noticed they have some new Challengers, Tuscanys and Palazzos for sale, but they are not a Thor dealer?!
I also called the most local listed Newmar dealer in Mesa to inquire about the part that John was kind enough to alert me of, and they said they stock no parts, and it was the parts dept I called?!