I never ment fret filing as a start off to low action. Only as a last effort if other means diddent work. You are correct no one should file unless they know exactly what thay are doing. But I diddent assume he would arbitraily start hacking away at his frets. So why did you? I think I have been taken out of contects. Back to the problem at hand. The original guy said that only his E&B strings were buzzin. And only when he hit a open note. Perhaps his nut is too low causing his open note only to buzz on the first fret. I say this assuming that the first fret note F is cool like he said. Another possibility is that his first fret is too high, causing the buzz. The need for slight neck bow and or the proper pressure on the last point of the saddle before pickupville may not be needed to be taken into consideration at all at this time. Have we both out thought ourselves? Maybe. Anyway all of the tricks of lowest string action before buzz are quite grounded in physics and therefore not much fun to argue about. By the way try my advice and then tell me I don't what I am doing. I can be cool with that. I am the second best guitarist around because everyone else is #1. Peace with mississhippy.