The nut on my Epi Del Rey is cut too low so I bought an All Parts graphite nut last nut and was going to try to replace it with my very limited knowledge. The nut that I bought is not as tall as the nut in the guitar now so it won't fix my problem. Can I place some type of shim under the nut to raise it a little bit? Should I do something else to fix this? What kind of glue should I use to keep the nut, nut/shim in place?