i'm taking kaplan right now and just took #2. i scored worse on it than the original diagnostic even though i took my premed requirements years and years ago and hadn't begun reviewing it until after the diagnostic. i thought i was learning things these last couple of months, but apparently not! i feel like i understand the concepts when i read them in the books but then forget the details when it's time to take the exams. i don't know what to do ... more passages or learn the details. my gut tells me to practice passges, but if i don't know the equations and stuff i won't get the answer right anyway.