I got an American Pro II in December-20 and all is well. I had some minor adjustments in the shop I got it from. Recently I noticed a slight but obvious fret buzz on the first fret. Low e string most evident, but b and g also have it to a lesser extent. I took it in again and they tried with string tree adjustments, and adjusting saddle height. Neck looks fine, not flat but an ever so slight arc that looks OK. Strings 11-49 and it was adjusted for that originally. And they are new strings. (Buzz on the ones before the change as well) The fret itself seems snug enough. Can't see anything wrong with the nut either. Tried to compare pictures online with it and I trust the shop to have noticed if something was wrong there. I am not super keen on messing with the truss rod, but perhaps that is the only thing that remains? Shaving the fret is possibly even more "no-way-back" kind of assault, so that is also more on the not-now-but-if-desperate-list.