Please give some pointers in RC

[anshumania]

Hi
I am not generally bad in reading comprehension but my scoring accuracy is fluctuating enough to scare me. I generally get <80% right in reading comprehension.
2 weeks back i gave GMAT prep and scored
GMAT Prep 1 650
GMAT Prep II 690
Have my gmat in a week. So was concentrating on all areas that i have picked up as weak over the last 2-3 weaks and decided to work on them and have given a couple of tests.
Kaplan 540, 610, 650. and
GMAT test code 14 690
GMAT test code 42 690.
Manhattan GMAT online 650
Princeton Review 690

What has been irritating is that i have never been able to cross 700 ! Today i decided to try the free Princeton test and got a 680.
I got 3 wrong in Quant , 2 silly mistakes my bad.
And got just 1 wrong in each SC and critical reasoning, which really was good to see.
However my reading comprehension had gone for a total toss. I got 9 wrong with 7 in the 'reading comprehension Specific' subsection.

Can some one guide me as to what flaw is this pointing to ? Or any other tips on reading comprehension.
I am generally not bad at reading comprehension but obviously got razed.

Thanks,

[gmat.raj]

you've covered all test prep books and i guess you're doing good. You will score more in real test. Just make sure you dont over do your practise test. all the best