Powdercoat was really crap most of it chipped off with a bit of effort. All the stuff that didn't I just used shelleys paint stripper and it all came off. Then got 120, 240, 400, 600, 800, 1000 grit sand paper and sanded and sanded and sanded and sanded
I wet sanded when I used 800 and 1000. Then got the autosol out and buffed it to the final finish.
I tried to Autosol without sanding but got a more dull finish. I think this was due to some of the chemicals(primer?) left on the frame from the powdercoating.