Hi AlexWP88,
Since you did not complete a Mistake Tracker after each CAT, it's not surprising that your scores are so similar - you weren't doing the necessary review to define WHY you were getting questions wrong (so that you could 'fix' those issues). At this point, you could still pick up some points, but by waiting until the last week before your Exam you are have likely limited how much you can improve in that time.
To start, you should complete a Mistake Tracker for the CAT that you took yesterday. Be honest with your assessment - and tally up the number of 'gettable' questions that you got wrong. THOSE questions represent the missing points that you're looking for. You don't have to be a genius to score 660 (and you don't have to correctly answer ANY question that you think is too hard or too weird), but you have to take responsibility for the questions that you CAN get correct. That means you have to take the proper notes, do all of the work 'on the pad' and make smart choices throughout the Exam.
GMAT assassins aren't born, they're made,
Rich