I'm sorry that you had a disappointing test day. You still did a great job overall with quant and IR, so very nice job on that.
In the period from the 17th to the 24th, your verbal practice scores ranged from 31 to 38. Your skills could not have actually changed that much in such a short timeframe, so that kind of fluctuation indicates that something is problematic somewhere - and that, on the real test, you have to be prepared to score at the low end of that range unless you figure out and fix whatever the problem is.
There are a number of reasons why this can occur. One is timing, but it sounds as though your timing was okay. Another is mental fatigue. Did you feel any of the symptoms described in the article below?
http://www.manhattangmat.com/blog/index ... you-crazy/Obviously, you were experiencing some amount of mental fatigue by the last section of the test. The question is how significant it was. What did you do in the last few days before the test? (I notice that you took a practice test the day before, which is a big no-no. We don't recommend taking a practice test within 5 days of the real thing. You basically ran a practice marathon the day before the real marathon...not a good move.)
What did you do the morning of? Did you have the symptoms described in the above article? (Note: physical fatigue and mental fatigue are very different. Most of the time, we don't know when we are mentally fatigued, because our brains are too tired to notice it!)
Mental fatigue can lead to answering more quickly / not checking as carefully, and therefore making careless mistakes (but not realizing it, of course). It can also lead to the opposite - difficulty making decisions.
Do you think this could have been a factor in your case? (I'm guessing it was...)
In terms of where to go from here, can you give us more data on your strengths and weaknesses? You can use the below article to analyze your MGMAT CATs:
http://tinyurl.com/analyzeyourcatsBUT your most recent MGMAT verbal score was at the high end of your range. So if you can, go back and analyze your GMATPrep #2, which was quite close to your V score on the real test. They don't tell you anything other than what you got right vs. wrong, but give us information on the question types AND sub-types (eg, not just "I missed 4 CR" but "I missed 1 CR Weaken, 1 Strengthen, and 2 Inference"). If you can't actually identify what the sub-type was...then you have some work to do. :)
Finally, I just want to mention that a score of 40 on V is the 90th percentile - that is, it is a VERY high score (the Q and V scoring ranges do not use the same percentile scales). That's not to say that you shouldn't go for a V40, but you don't need a score like that in order to have a great overall score and to satisfy any admissions committee. Just keep that in mind.