Truss rod issue

[vmaxblues]

Hi All,

Recently acquired a lovely old Nightingale bass, sounds fab, but in setting it up I found an issue with the truss rod adjuster. Some time in it's history someone has chewed the allen head on the adjuster, it is brass.

[URL=http://smg.photobucket.com/user/vmaxblues/media/IMG_3007_zps0im8g9ff.jpg.html][IMG]http://img.photobucket.com/albums/v333/vmaxblues/IMG_3007_zps0im8g9ff.jpg[/IMG][/URL]

[URL=http://smg.photobucket.com/user/vmaxblues/media/IMG_3008_zpskfo5e3bm.jpg.html][IMG]http://img.photobucket.com/albums/v333/vmaxblues/IMG_3008_zpskfo5e3bm.jpg[/IMG][/URL]

Is this a case of removing the brass nut and replacing it, assuming I can remove it?

Or is this a fretboard off job?

Any insights would be welcome, I am about to take it to a luthier but would be interested in your views.

Cheers

Stuart

[neepheid]

Do you know what size hex it's supposed to be? I had some luck once using the nearest sized Torx bit in a mashed 5mm hex- the shape meant that it found what little remained of the edges and was able to turn it.

T27 -> 4.95mm (great for 5mm hex)
T20 -> 3.84mm (might work in a 4mm hex, but it's a tad small)

Worth a shot if it's mangled already...