Does anyone know a quick-fix to level the strings on the nut?
It’s a 2’nd hand parts-caster made from old Fuji-gen parts, and I’d really like to avoid removing the old nut (it’s not coming out easy), was thinking to try giving it some epoxy or super-glue in the slit for the D and B-string, but I’d love to hear any ideas before I start destroying one of my guitars :-)
Anything you put in those grooves is going to be, by necessity, softer and less durable than the nut itself, so whatever you decide, you should still think of it as a temporary fix. Consider a material that produces as little friction as possible. A shim will move around and possibly fall out. Another poster mentioned bone dust/epoxy mix and I honestly don’t have a better suggestion.
Most music shops keep a luthier in a gimp-style storage crate in the back room. Always a good investment to have one install and set up a new nut if you can do that. That way you know your action and intonation were set up properly.
Yes, this it definitely a temporary fix :-)