Should be able to get plastic or stainless from skidim.com west marine or overtons no problem. Just measure the ones you're taking out. First step would likely be a medium cut rubbing compound. Take your time and don't run fast in one spot for a period of time. Keep the buffer moving. If that's not enough you can go to a heavier cut compound, or even wet sand. Follow with muliple coats of high quality wax. Search through the old threads and you'll find lots of info and advice. Check the manual, but should be Dex3 fluid.
I spent most of my money on booze, broads and boats. The rest I wasted. - Elmore Leonard
I had always thought that there was nothing quite so sad as an abandoned boat.-Terry Hayes