I'm actually heading up to OASC in about an hour. I received a walkthrough of the exams in a word document, which I can say is not, not the same as the aptitude test information on the RCAF website that I found a few months before. It helped me relax a little, if not pass the tests. And I also used that SDT site for a few months, and at the very least it's flexed my brain into working the numbers and learning the tricks. Anyway, I'm going to stop talking now, wouldn't want to jinx it....
Good Luckings to you!