This same exact thing happens to me! I usually score 18s and 19s on my first round, but then I go back to blind review and I end up with a 21 or 22. As I'm blind reviewing, I am kicking myself in the butt for picking stupid answers and crossing out all the other answers except the right one. On a PT, after blind reviewing, there are maybe only 3 or 4 questions that I definitely got wrong because I had zero understanding. I can't tell what this indicates about my knowledge of LR.