I have a travel chinese guitar that needs some fretwork; action needs to be set quite high to get rid of buzzing, fret rocker reveals unlevel frets all over the board (not wild rocking but small rocking in many regions). I would like to do it myself; I have all the requisite tools, but not a ton of experience. I've done one level and crown thus far that turned out ok. My main question is, how can I tell whether a given fret needs to be re-seated vs leveled with a file? The fact that there is rocking in many regions, leads me to believe unseated fret ends is not my primary problem, but I do allow for the possibility that the frets are both unlevel and some are unseated. I don't really know how to spot an unseated fret end unless it were extremely obvious; the only fret end I noticed that may have been elevated is pictured here. Specifically on the right side of the fret end on the picture. I can get the very edge of a fingernail under there. I gave it a few whacks with a deadblow hammer and I don't see much change. I don't see that sort of thing on my other guitars. So, I guess two part question: how do i fix this one fret (or should i?)? and how to spot lifted frets? Thanks!