if you retake it, just make sure you're much more prepared than the 1st time you took it. and be honest with yourself, if you think you can only do up to one point better (e.g. if you got 18 AA and you think you can only pull 19 after retaking) it may be better to improve other aspects of your application and spend time on those things rather than studying for the test all over again. anyways, this is just my perspective, do what you feel is right...