Greetings Luthiers. I have a 50th anniversary American Jazz Bass. I just noticed that the frets do not appear to be on a level plane with the neck. (I would say they don't appear to be perpendicular to the edge of the fingerboard, but that wouldn't make sense because the edge of the fingerboard obviously gets wider as it approaches the heel.) Rather, the frets appear to be slightly "slanted" down toward the E string when you look at the bass in full frontal view. It's slight, but noticeable. I have another jazz with a 62 reissue neck that doesn't appear to be that way - the frets look "level". Hard to tell, of course, because there are no true "right angles" on the bass do to all the curves. I know that Dingwall and others have designed basses purposely with significantly "fanned" frets. But is the slight downward angle normal for certain years of Jazz Basses?