A little personal advice from spending the past 5 years buffing cars, a slightly worn pad for your polisher seems to work better than a new pad, I've found using a filler spreader (like a stiffer, thicker, large debit card) to take 1mm off the pad, and i always finish with a glaze, and dont forget to protect your black textured plastics as it can be a reet pain to get polish out the grain!