Well the bone nuts I ordered came in today and it only took a bit of sanding to get the depth down so it would fit the nut slot BUT it looks like it's about 1/16" shy of being the right height. I think the factory nut is about the right height based on the gap under the 1st fret when pressing down on 3rd fret. When I do the same with the bone nut in place, there's only a gap big enough for 1, maybe 2, sheets of paper between the string and the 1st fret.
Is there any way to easily/securely shim the nut so it's at the correct height?