11-54s on mine and it plays pretty well. Take it to a tech and see what they can do with the nut. I agree with your sentiment about the guitar, generally. It is capable of incredible sounds but isn't perfect by any means. I've definitely had issues with the nut and tuning stability and I wouldn't call this a "shredder's" guitar necessarily, as compared to an Ibanez. I love using it for chunky rhythms and ambient chords, but other than that I'd prefer other guitars for shred (...if I could actually shred).