That sucks! I feel your pain. You're luck in that just the arm was destroyed. I had an unexpected rain storm come through last year while we were out for dinner and it destroyed the the arm on one end, bent the tube in the middle and tore the fabric at the channel where it connects to the roof. Completely destroyed. UGH...
At the time, I was getting ready to trade it in for the new Jay Flight I ordered. As expected the destroyed awning affected my trade allowance. Lesson learned. I now NEVER leave the awning out unattended. I wouldn't trust the newer autodump awnings either.
It looks like Carefree has all the parts available on their website.
https://www.e-carefree.com/ecarefree...vletController