Wire brush on a drill to get rid of most the burrs, then some wet and dry sand paper, just kept using finer and finer untin it's mirror finish, the fuel rail protector thing is the easiest and is best to start on if you wana try yourself, you end up with sore fingers after it all though. There's someone on here though who knows a company in Nottingham thatl polish it, just can't remember who that was.