Well Roger I did polish with automotive polishing compounds and the fine scratches were still there. Luckily it was just a test panel I did.
Yesterday I went over the 2 black painted bodies (Createx Opaque Black) with the 12000 pad using water with a few drops of dish soap. They were actually pretty smooth before I sanded. I did not get any scratches and it came out even smoother. Clearing next with the Rusto Crystal Clear Acrylic Lacquer.