All I can say is wow: I did the 1/2 cup of bleach in a gallon of water and some Dawn dishwashing liquid, sprayed/dumped it onto the awning, rolled it up, waited 30 min, unrolled and hosed it off. I can't believe what a good job it did. There's still a few spots/stains that I'll have to get (Magic Eraser?) but its WAY better than it was before. Thanks to everyone for this suggestion!
2015 XLR Hyperlite 30HFS5 (mods being performed regularly)
2009 Salem LA 292fkds (gone)
Nights- ('12)23 ('13)23 ('14)15 ('15)31 ('16)25
2014 Harley Davidson FLHX (XLR cargo)
2014 VW Jetta TDI (diesel sipper, camping support vehicle)
2011 Ram 2500 CC 4X4 CTD, B&W Companion (toy hauler hauler)