My Rickenbacker has a black plastic nut and the high E string is buzzing a bit when open. My best guess is that the nut slot has gone too deep but I am no tech.
If it's a matter of filling it up and dressing it until it fits the right string height, what should I use? I know luthiers will use bone powder or baking soda with glue but that might make a mess on a black nut.
Thanks in advance, fellows!