Unfortunately, I'm all thumbs when it comes to repairs, just ask my wife!! I do have a local tech that I trust and have had great results with, so I'll probably use him.
I find the idea of Maccassar Ebony intriguing and will give that a shot. Any idea where I can source one?
Bone would have probably been my first choice, but I like to try new things so if the M E doesn't work out, what do you recommend in the way of bone? I live in Arizona near a reservation and I could easily find some old coyote or Javelina 'debris' literally lying around if I had to.
FWIW, I have a brass nut on my Ken Smith and I feel it's a big part of it's sound, I wouldn't swap that puppy out for nuthin'.