best way to file/smooth a dinged spool???

[ivanputski]

I have a VS200 and in the process of landing my last fish, the edge of the spool where the line comes off got lightly scratched/dinged... nothing major, but definitely enough to fray my braid one cast at a time as it flies off the spool... can any of you recommend the best way to smooth it out? The fish had some odd proportions... 36" but was 21.5 pounds... it was a tank and had some power for a 36 " bass... You know when you see a 10 year old kid and you know he's going to grow up to be a monster? Thanks for your help guys... (Someone asked about a similar problem with a ding, but couldnt find it with a search)