I am not familiar with that guitar. What type of bridge does it have? If it is a floyd, you may be able to make some saddle adjustments (moving them forward or back) and this should help. You'll probably need a tiny allen wrench, but again I'm not familiar with that guitar. I have a charvel that had bad intonation problems and after screwing with the saddles I have it to where it is decent, but still not perfect.
Good luck though, I hope you can get it fixed on time. You may need to break down and bring it into a shop if you don't have the time.