I used 6.5" pads and i did not get really any correction for a 12 hour buffing job. What a waste of time. So people are saying to get 4" pads. I have a pc 7424. So what do i need? For 6.5" pads i have, 1 yellow, 2 orange, 2 white, 2 gray, 1 blue. I see AG sells 2 packs of 4" LC CCS pads. Which backing plate am i getting? I see 2-3/4 Hook & Loop Backing Plate and 3.5" Dual Action Flexible Backing Plate- porter cable 7424 or 7336 hook and loop backing plate 3.5 inch. Also what is this D.A Adapter 5/8" X 11 I dont need that i dont have a rotary. I hear people talking about that purple wool 3.5 pad. Am i going to use all 4" pads for whole buffing and no more 6.5" pads? Can i ruin or burn my paint with 4" pads?