Chasing a buzz

[Doug Davis]

I have an old Englehardt with an 'ebonized' maple board.

I all but have it sold to a friend except for one area on the G that buzzez. So I proceded to replane the board (several areas had worn through the thick lacquer and I thought that might be adding to the cause).

as it stands now, the board is true and I've added a tiny bit of relief but no matter what I do, I still get (string/fingerboard) buzzing at the same spot. but only on the G and only in this same spot?

I'm not sure if its because this is at the 'bottom' of the relief arching or ??