Anyone know where to get a Mustang string nut? I've searched all over Google and eBay and can't find one. Basically, I need a precut 1.5" nut (a bit smaller than the normal Fender nut). I bought a regular Strat replacement nut, only to discover that it was about 3/16" too wide and therefore won't fit the neck I'm building. I really don't want to have to cut it and then dish out $60 for a nut slot file set from Warmoth or Stewmac. Any help?