Hi robzzz,
Based on the extra information that you've provided, I have an idea of some of the things that went wrong and a few follow-up questions about aspects of your study that seem "strange."
1) The OGs 11, 12 and 13 have so much overlapping material that you were either repeating lots of questions that you had already answered or "coasting" through material that you had already worked with. Either way, you would probably have benefitted by working with new questions. Did you use any other materials besides these books?
2) If the 14 full-length Tests that were provided were NOT CATs, then what were they? Were they pencil-and-paper Tests? Linear computer tests? By taking so many practice Exams that did NOT match the Official GMAT, you were training for a different experience than the one that you faced on Test Day.
3) Taking 5 CATs on 5 consecutive days was a BAD idea. If you did this close to Test Day, then you likely 'burned out' a bit and didn't even realize it.
4) If your goal is 740, but you never scored higher than 650 during practice, then why didn't you reschedule your GMAT so that you could continue studying?
Thankfully, the GMAT is a predictable, standardized Test, so you CAN train to score at a higher level. Using your 560 as a 'baseline' score though, you'll have to put in a lot of specific work to raise that to a 740.
When are you planning to apply to Business School?
GMAT assassins aren't born, they're made,
Rich