when i polished my first rocker cover with a wheel on a bench grinder i found that i had a hazy white effect on it.
here's a pic below, bit hard to see the white haze but its there and got on my nerves no end. I actually bought a polishing machine ( well just an uprated motor ) which didnt slow down when i put pressure on the workpeice as opposed to the bench grinder. When i put my rocker cover under the buffing wheel of my new polisher, it got rid of the white haze with ease so maybe splash out on a new ( or second hand ) polisher
?