Just a followup:
I ended up purchasing a 15' replacement awning cover ( https://www.ebay.com/itm/282190297120 ) .. I was able to make use of the old support bars by utilizing some harbor freight lynch pins ( https://www.harborfreight.com/50-piece-lynch-pin-kit-67544.html ) to keep things at the right height since the original levers were of no use. I followed online instructions on how to wind the awning up and had to add another twist in the end.
Anyway, it's been a while since I did that work so my memory is a little fuzzy. I do remember that the biggest pain was sliding the new awning down the slots in the main tube. Eventually I figured out that it was easiest to use some teflon spray that I had laying around (for snowblower blades), would allow it to move much easier. I'm sure there are other lubes that work as well.
