Hi Steve,
First of all congratulations on getting in! I've just passed the sim assessment 2 weeks ago. I'm now in the silent period between completion and the job offer.
It does make me a little anxious I won't lie! Maybe we will bump into each other at some point.
I can only echo what Steve has said regarding the assessment. The aptitude is the real make/break part to it all. All the information is in this thread as to how you can prepare. I won't reply to PMs anymore as most of them it seems are people not using a simple search function.
Good luck everyone.