Failed the 70-649 today

I took the 70-649 today and failed by about 130 points on my worst section. There were only 21-25 questions per section, and it went into a lot more detail than I had anticipated. I think I'm going to take the tests seperately instead. I did almost pass the 70-643 section which was a suprise, but I didn't clear 600 on the other two. I used the 70-649 MS Press Book, Sybex 640, 642, and 643 book, and Transcender.
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I typically spend a month or less prepping for an exam, but I worked on this one for 3 months before I took it. That is the most time I have spent on an exam.