Hi, I just got my Left front fender back from the body shop. They did a great job at removing the dents but they scratched up the grain pretty good. I have an original DMC scotch brite pad but the scratches are much too severe for this to work. what # grit of sand paper should I use to get the grain going again? or is there a better way? its looks like 60 grit would be about right but please let me know before I go ruin it:) Thanks David [Non-text portions of this message have been removed]