I am in the last lap of my GMAT Prep.
I am yet to score 720 Plus in any of the Prep test

Though i will be more than happy i get this in the real exam but i have seen the opposite trends

Maximum score in Quant till now: 49
Maximum score in Verbal till now: 41
(Not in the same CAT)
Considering my Engg. background, I aspire to be in the range of 50-51 and will be the happiest t person on earth if i can repeat V41 in my real exam

Tough Stats and Probability problems are the main obstruction in my Q50
SC is my Achilles Heel in Verbal. My observation is that if an SC Q is testing only one or two grammatical concept i am good with it.
But as soon as logical comparison, Parallelism, and Meaning Clarity join together to make my life tough, I find myself at loss

I panic and usually do not have clue about the possible approach to this kind of SC problem

Can i overcome this? If yes, what is the right approach or technique to solve these Q's?
What are the other areas i should look into to improve ot at least maintain the same score in real exam?
Do's and Dont's?