Ok, this is a sanity check... Recently I had a Fender bass that was setup, leveled, crowned, polished by a super luthier here in the area. However, when I got the bass home, for the last two weeks, I have noticed that the last 3 or 4 notes on the D and G, and to some degree A strings are so buzzy to the point that they rattle when the string is plucked even lightly over the neck pickup. I took the bass in today, and the luthier set my relief back to .015 inches (yes I know, but the information is valuable) and said that relief is to be set between .014 and .016 ideally, and should be left there, and truss adjustments are only to keep the neck in this range (The bass was at .020 when I brought it in to clean up the lower registers and minimize fret buzz down there) He then starts to RAISE the action of the strings, and keeps going to the point where it becomes too high for my comfort level (and yes Brad, I did a "taste test" and was able to determine the difference between 4/64 and 4.5/64 of an inch on the G string). Even at this point, after raising the action to 6/64, there is still significant rattling on the upper 4 frets of the instrument (from fret 18 and up). Interestingly, the difference between fret 17 and 18 is like night and day. If 0 was NO buzz and 10 was full out rattling, it goes from like a 3 to a 10 in one fret, and stays that way until the 22nd. Now technically, he was able to determine that there are no high frets, b/c he wasn't able to "rock" any straight edge on the frets, and he checked to see if the 22nd fret was high as well (you won't see a rocking, but would see light passing through at the 21st fret) But still, the problem is there, and to the point that the notes in this region would pretty much be unplayable...so the luthier starts lecturing me on how I should just worry about playing the bass, and not listening for rattling (hard to miss this kind of rattling, this is the note cancellation type, and he was even able to duplicate it with very light touch) ...bear in mind that I demonstrated to him what I thought was acceptable buzzing about 5 times before this, on the Fender, and wasn't looking for perfection, and told him as such, but was at least looking for the last part of the neck to be in line with the rest of the neck in terms of the same amount of fret buzz, to which he said this is "impossible." Am I wrong to expect the last part of the fretboard to play similarly to the other 80% of it in terms of fretbuzz? The final "solution" is that he is going to taper the frets off (plane them lower and lower starting from the 18th and approaching the 22nd fret) very subtly in hopes this fixes the problem. What do you guys think? Am I being too picky?