Rich: OUCH! Not much you can get done with your back messed up, best wishes here for a swift recovery!
Jim: My two cents would be to grab one of the sanding sticks made for canopies, I know Squadron makes one with three ultra fine grits and sand the ridge off. Then you can dip it in Future to clear up any tiny scratches that might be left. A piece of brown paper bag balled up can serve as ultra fine sandpaper too.
Been working on my P-40 for that GB and a 1/35th Tamiya Jeep here.