PT 55, 53, and 52 have been the most brutal for me. 55 was my cold diagnostic, 53 and 52 have been taken in the last 24 hours. Mid-late 2000's were difficult
Grammar is especially important for the curve breakers. Here is an example of a curve breaker made all too difficult by grammar. From PT 55 https://7sage.com/lsat_explanations/lsat-55-section-1-question-22/