I took a bunch of practice exams and never got a perfect score on them. I usually got one or two reading comp questions wrong, and maybe a couple incorrect "fill in" questions.
I brushed up on my vocab with the Manhattan Prep flash cards, which I found really helpful. Really, really good stuff. I think just filling in the gaps made it easier to eliminate answers in questions, as I was always pretty good at it, but now encounter fewer words I don't know. I also think I got somewhat lucky on the reading comp questions, which I thought were all easy and unambiguous, unlike during practice exams I took. But that might have been actually using my extra time to re-read the passages, as I usually have 6-8 minutes left at the end (which I would just skip to the next section on the practice exams rather than really using every minute).
I'm not a huge bookworm, but I do read constantly online and I read things like NYT, WSJ, Economist, etc. I think that helped me in the verbal section.