I do my own set ups. I have the neck on my fender Amer Jazz Stnd set with some relief, not super low but not high action and light gauge strings (40-95). There is no fret buzz on the E or G strings, but on the A and D there is slight buzz in the 5-12 area (very slight, I can live with it) but frets 15-18 are very buzzy, than fret 19 sounds ok again (slight buzz). The bass only has 20 frets by the way. The action like I said is higher than I'd like right now. Anything you can offer would be helpful, but it sorta sounds like a high fret or there abouts to me.