The polishing job looks great, David. Nice work.
Are you able to use Micro Mesh pads? The finer ones (6000, 8000, 12,000) would work well on bare plastic. Perhaps not necessary on this project, but in case some plastics do not polish up as well as the Rolls. Maybe Micro Mesh pads (used wet) could be a first step, followed by your toothpaste regimen. Just a thought.