We are all set. The email to retail@argrv.com put me in contact with Sindi. After providing VIN and detailed specifics, they gave me the info on just the right part number and I ordered it off their web site: rvparts.argrv.com They were great to work with. Thanks to all.
PS My part # was 248283 and they included a PDF of the web site page so I could be sure. However, you should confirm that your part isn't different, depending on your specific coach.