i did myne at home. wet sanded with 1000 (if theyre really dirty), n then 1500, n then 2000. after that mitsubishimike hit it with some compound n a buffer. u could always just use plastic polish instead of the compound n buffer tho. if u wanted to get creative, u could use plastic polish as the "wet" on ur 2000 grit paper (i did that on my fat 5's with mothers mag/aluminum polis they came out SEXY). do this of course after uve used ur 1000 n 1500 grit. all it takes is time n elbow grease my friend.