Here is the before and after pictures, the knobs were painted black and had white overspray! These are from the heater box doors.
I mounted a M4 machine screw to my drill and used 600 grit sandpaper (wet) to remove the paint, then extra fine steel wool wetted with a drop of dish soap,finally some Simichrome on a wetted extra fine pad followed by polishing it with a piece of cotton
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In hindsight I could have skipped the Simichrome (polish) on the pad and just used the cotton sock to apply and remove the polish.
Thanks for the help everyone.
Dave