I'm not going to give any question hints because they've already been covered in recent posts. What I am going to say is that I spoke with Ken Bassett early last year, and we talked about how this test has changed over the past six years. I told him that guys would study the questions on the practice tests and pass easily...then the test changed, and almost nobody was passing. It was then modified to what we have today. Ken said that someone could still focus on the testguy practice tests and pass, but must understand the theory behind the questions, not just memorize the answers.
That's what I did...focused on the theory. Also, make sure you memorize the formulas. There were maybe 5 or so questions that I didn't know and had to guess.