I just Beat The GMAT!

Let me cut the long story short.
After a month of preparation, I gave GMAT yesterday and scored 570.(Q48, V22).
I was aiming 630+.
I gave GmatPrep (560 and 570) and all six MGMATs and scored in range of 560-590. Never had a single 600 score.
My breakup of previous 6 tests ranges from:
Q-42 to 45
V-16 to 22.

Experts plz guide me to improve my verbal score. I did OG13 twice but even in my second revision I was not able to make out the answers especially in CR and RC.
In RC is the weakest and most time consuming.
I also did Manhatt's SC and CR and Kaplan's Advance Verbal workbuk but still I am below average in Verbal.
In addition to my problems, I have a doubt regarding my GMAT score.
I scored Q48 but my percentile was 78. Does it mean i am lacking in Quant also?

This time I am targeting 700+.

Thanks is advance.