@audiox - I also went from Audit to BEC and found the transition to be very difficult...the concepts in audit build, one chapter from the next, and logically make sense as you go. BEC does not haha, it's just random concepts thrown at you from any direction. I am not sure what prep materials your using, but Beckers 2012 materials are painful to get through, really long lectures and endless MC questions. I greatly underestimated BEC! Best of luck to you!
FAR - 77 (Feb 2012)
AUD - 70 (Aug 2012), 89! (Oct 2012)
BEC - 71 (Dec 2012), 75!(Feb 2013)