I'm taking my first shelf exam this week, and I ran across sample questions for each shelf on the NBME website (http://www.nbme.org/PDF/NBME2008SubjExams.pdf). Just wondering if anyone can comment on how these questions compare to the actual shelf. To me, they seem WAY too easy (similar to how the Free 150 questions are much easier than the actual Step 1 exam). Any feedback is appreciated.