I have a nice ‘91 777VDY with the old square neck joint, but a fantastic D-shaped 17-19 mm wizard neck. My best sounding guitar was my beloved ebony fretboard ‘98 7VWH, but it had the U-shaped Jem neck profile 19-21 mm. I decided to sand it down to 17-19 mm wizard profile neck and throw some Jescar 6105 SS frets on it. Couldn’t be happier with the result.