Verbal Reasoning

I have a few question pertaining to the verbal section on GMAT, i have taken 1 GMATprep and 1 MGMAT till date, i've analyzed my performance on both of these tests, scores are as follows.

1. GMAT prep - 15 Jan - 640 - Q - 47 , V - 32
2. MGMAT1 - 8 Feb - 640 Q - 45 , V - 33


On analyzing these tests, i found that Verbal Section is my nemesis. Between 15 Jan and 8 Feb, i have gone through most of my verbal section materials. Though the data set is currently too little to make any concrete conclusions, Here are my hit rates of specific sections in verbal.

RC - GMAT Prep - 84.62 % MGMAT - 58.33 %
SC - GMAT Prep - 64.71% MGMAT - 46.68%
CR - GMAT Prep - 45.45% MGMAT - 57.14%

In my Verbal - GMAT prep i got 80 % of the First 10 questions Right, 70 % of the next 10 questions right, 60 % of the next 10 questions right, 50 % of the next 10 questions right and i got the last one right. - My final score - 32

Which is in stark comparison of my Math Score, where i got, i got 80 % of the First 10 questions Right, 50 % of the next 10 questions right, 60 % of the next 10 questions right, 28 % of the next 7 questions right - My final score - 47

Now since the test is adaptive, so ideally in both the cases, the difficulty level should increase as i get the questions right, so my hit rate should ideally decrease because logically speaking, the difficulty level of questions is increasing. However, even though my hit rate in verbal was better than my hit rate in quant, my overall score in verbal is abysmal. (My target score: 700)

Can some one explain the apparent paradox (almost seems like a CR question). Can someone also throw some light on how the verbal scoring algorithm works, and what i should do to push my score in verbal.

Experts please help.