First, I was changing strings on my ca. 1996 J-45 I have owned for a couple years when I noticed my (bone?) nut has what appears to be two natural cracks across it. It could have been savaged by an errant X-acto knife in its past, but I think it may be natural. Anybody seen a worse nut from Gibson? Should I replace it? It is working OK. I wanted to just buy a pre-shaped bone nut online, but my string spacing is much wider than most I have found (1.520") at a reasonable price. So I thought I may try cutting one. FWIW, I have never cut a nut for a Gibson before, but am pretty handy with Fenders. I figured I could just try to duplicate the original and if the result sucks, I will stay with the old one. I have two blanks. Second. If I change it, which blank should I use? I like the character of the translucent blank, but the opaque one seems more uniform. They both sound about the same when dropped.