Heathrow Director, No it wasn't due to my Asperger's.
I think in the end I just wern't good enough in the tests. I must say they are the hardest I have ever done. In the end I only managed to do 17/40 of the cubes, around 30/50 diagrams, some were random guesses in the last minute and 16/20 in the maths. The only one I felt I did well in was the ATC paper.