I got the swirls removed from the fuselage using 2500 wet-or-dry, then 3000 Trizact. No harm done to the paint. Now I have to re-buff but I'm going to wait until the hook-and-loop backer pad for my rotary
Milwaukee arrives. I don't want to introduce any more of the dreaded swirls, so I'm going to try a test patch somewhere inconspicuous before pressing on.