I just received a '75 Jazz today from an on-line dealer in TN. While the natural finish looks like a 30 year old bass, I can live with that. My issue is there are a couple of major dings on the back of the neck that are deep enough to bother me when I play. How do I fix those without making it worse? While I don't like the dents, a big glob of glue sticking out is going to be worse. Any help/advice would be greatly appreciated. Thanks!!