A school said to me that when students are 3-4 points below where they want to be and scoring in high 150's to low 160's to just study your worst section and stay consistent on the others.
Since it is easier to improve upon a -10 to -14 by getting 6-8 more correct rather than to try to get 2 more right on each section and absorb more material in a short time, they found that Applicants were much more likely to hit their target score.
This doesn't work if you are trying to go from 170 to 175 since you are not answering that many incorrect. But a 160 is generally 27 to 30 wrong.
Good advice! Games are my weakness, for I miss anywhere from 8 to 11 questions.