Just a quick google and I found these service centers, unknown if they are an "authorized FR warranty repair delaer":
Pedata RV
Administration, Rental & Service
5151 S. Julian Drive
Tucson, AZ 85706
520-623-6387
Toll Free: 888-973-3282
Fax 520-623-9682
Freedom RV
3735 E Irvington Road
Tucson, AZ 85714
888-514-0365 Toll-Free
520-514-0365 Local
800-782-2294 Service Dept.
520-750-1100 Parts Dept.
520-750-0100 Fax
La Mesa RV
Factory authorized warranty stations for every make that we sell
(520) 807-7200
3255 East Irvington Road
Tucson, AZ 85714
David Hennessy - Service Manager
Canyon State RV, Inc.
3010 N. Oracle Rd.
Tucson, AZ. 85705
Phone 520-622-6339
Fax 520-622-6315
Toll Free 1-866-929-CSRV (2778)
Email:
customerservice@canyonstatervaz.com
Dave White - Parts Manager
If all else fails, it looks like there are some authorized repair centers in Mesa, Phoenix, Chandler and Dewey...depending on if you can travel or not. I hope that helps you and your needs.
Joe
Also, here's their direct number in case you want to contact them to see if they have a contact in their db.
Forest River Ph. Number, 574-389-4600
Forest River Parts Dept. 574-262-2212
Rockwood & Flagstaff (219) 533-5934
3010 College Ave
Goshen, IN 46517