Oops, hadn't finished that last post, had a browser issue :-/
One thing that I've been avoiding sharing is that every panel on this car has been keyed. I know, poor little Porka right? It looked so sad sitting there, all unloved, how could I not try and sort it out?
Anyway, I've been testing my intended method for cleaning up the scratches as well as I possibly can - without resorting to paint. My fuel filler cover has been my test patch.
Before...
After. It looks good from this angle...
But with the light on it, you can see that the process of polishing out the sanding marks has taken out more touch-up paint that the surrounding paint.
So I'm planning to try again, this time using clear coat and leaving it to dry for a week before sanding and polishing. I can't make it look worse, so I've nothing to lose!