plastic polish

1200 is a little course to start buffing. Depending the severity of the scratches/oxidization, I start at 600 move to 800. 1000. 1500. 2000.
I used to go to 3000 but found 2000 works good. I like Maguire's heavy cut for the newer heavy solids paint then follow up with their swirl mark remover. Pads can be too aggressive too.
Finish off with this **** and a microfiber cloth. https://www.amazon.com/dp/B00SS1EDMO/?tag=fabo03-20