No offence taken at all.
Easy as un bolting, but not sure if you need any sealant for them. Mainly as I've never had to fit any.
Polishing depends on the finish you want.
The long way:
A multitude of wet and dry from 180-2000 and some serious time. Whilst they're small they are awkward where the arm protrudes.
The quick way:
Wet and dry from 180-600, a drill with small bobbin mops, cut, cut/finish and finish. Then finish with a bench polisher and Vienna lime to clean.