So the new Aerodyne (after setting it up fully, twice - swapped bridges) has fret buzz in exactly one fret and one fret only, and its very bad.
I set it up like every other bass I have.
Buzz is when E string is fretted on the 6th fret only, buzz comes from fret behind it, 5th fret.
Relief is same on as on every other bass, string height for the E is 3mm.
Using La Bella flats.
Makes no sense.
Any ideas before paying to have it looked at?