Are you going over the tests as EK suggests? You could spend a lot of time working on that so that you understand why certain answers are wrong and the right one is right.
The only verbal practice I did besides EK was the AAMC tests, and the two Kaplan full-lengths from that book.
If you need verbal passages, buy some practice LSAT books. There are 10 LSAT's in each, and the cost is about $30. Their verbal reasoning section is very similar in style and difficulty to the MCAT. Their arguments analysis section (Logical Reasoning) is also a good supplement to verbal reasoning practice. Check it out.