Hey guys, My guitar had never given me problems...then all of a sudden this SG just started having this buzz around the middle of the neck on the G string. It is only the G string and mostly around the 7-10th frets...then again around the 14-15th fret. Frets need polishing maybe? I had a fret dressing on this SG years ago but could I just do mu own polishing, is it easy? I tried changing the relief and action but no luck. Thanks for any advice.