SAT II Lit Advice.

<p>Hi all,
I am taking the SAT II Lit Monday ( I have extended time. Therefore, I take a different test, which has a 4 day window to be administered)
Anyway, I took the test in the blue college board book and got a 720 on it, however I then took a diagnostic test in McGraw-Hill's review book & got a 580!? I am really worried now and I have no clue what is going on/what I should do!!
I need some advice on how the actual college board released exam compares to the real one/ I would be grateful for any general advice you have to give.
THANKS in advance!</p>