I second that. My scores on NS are lower compared to TPR/EK -- (didn't know there are CARS passages from Kaplan).
Some of the passages are extremely short (half of a page) and easy to read (takes me like 5min to answer) and some are very long (full page) and dense (takes me 12-14min). For me, a good 20% of the answer explanations don't make sense. They are ok but not great in my opinion. But I generally score very poor on verbal.