Yeah, I took the test yesterday.
I think the green book helped me with the angles, math, and scan...being as they moved incredibly fast and they auto-changed in the book it definately helped as the test was much easier on those portions.
The letter factory and ATC scenarios of the green book were hurtful in my opinion.
Completely different than on the test.
I think the ATC scenarios were the toughest portion of the test mainly because of the triple clicking of planes (to change direction, alt, speed) was rather annoying.
The letter factory wasn't too hard... like everyone said, there is a brief gap or lack of letters before the 4 questions pop up.
Tip for the Letter Factory:
At the beginning, check which ramp is moving fastest, slowest, and which has the lowest line on the "available" part. They ask those questions a lot.