Re: Help!!!
I had the same problem a while back. I found out that because I did not play the notes in the 21st thread very often, they had oxides built up on them; plus the other frets had worn out due to a lot of string bending, which made the situation worse. I ended up sanding the fret a little bit and re-buffed it. May be you can bend the string on that fret for about ten times or so to smooth it out and then try it on the next higher fret to see if it makes any difference. If it does then you can do the sanding and buffing. If not, then you may have to raise the strings back up.