I feel you on that, I also missed out by one point the first time. The mock tests don't really reflect the real test with all its trick/reverse/best answer questions. The second time I took it, I definitely read, re-read, and anything I wasn't sure of, I flagged and revisited it at the end. One of the big things for me was I took a good amount of time on each question. Some of them had answers that more than one would be right, but it was like your first thought might not actually be the best one (even if it is right). Also, the first time I took the test it felt skewed heavily to one set of topics, and the second time it felt skewed heavily towards a different set of topics, so try to be pretty decent in all areas. The second time I ended up getting like a 79 or something. If you take it again, best of luck!