Hi miushock,
If what you say is true, then you're definitely in position to earn a high score on the Official GMAT. Going into Test Day, here are a couple of things to remember:
1) The GMAT will give you the score that you EARN, so if you're looking to raise your score, then you have to think about what you have to do to earn those missing points. The required work often involves strong attention-to-detail and note-taking (and NOT doing work 'in your head').
2) At your current scoring level, the GMAT becomes really 'sensitive' to little mistakes, so you have to do everything you can to eliminate the possibility of a little mistake occurring.
GMAT assassins aren't born, they're made,
Rich