Hi hsambiguity,
I have a few questions about how you took this CAT:
1) Did you take the ENTIRE CAT (including the Essay and IR sections)?
2) Did you take it at home?
3) Did you take it at the same time of day as your Official GMAT?
4) Did you ever do ANYTHING during this CAT that you couldn't do on Test Day (pause the CAT, skip sections, take longer breaks, etc.)?
5) Had you seen any of the questions BEFORE?
In addition, have you had a chance to really review this CAT? Beyond defining the general types of questions that you got wrong, can you define WHY you got each question wrong?
After reviewing the section, how many questions did you get wrong....
1) Because of a silly/little mistake?
2) Because there was some math/verbal that you could not remember how to do?
3) Because the question was too hard?
GMAT assassins aren't born, they're made,
Rich