I got a set of drls from another member and they have alot of grime to it. I used a 3m kit that we use at work and it kinda worked but i can still see fine scratches and the rubbing compound that it came with hasnt cleared them up ? It comes 500 grit, 800 for wet sanding, another pad im not sure what to call it. Can anyone help me from this stand point ? ill post pictures when i get a chance.