Just keep plowing through the Trainer and keep PTing as you get later in the book, it's really great for flaws so it should help. Try and get on some group BR calls so you can have the opportunity to review the whole test in more depth.
Predicting (esp in NA and strengthen) is good but have MULTIPLE FLAWS in mind, cuz there are so many, and the answer WILL be the most obscure flaw in the hard ones.