GMAT Strategy

Hello everyone!
I have been preparing for GMAT for the past 3 months now. I will be writing my test on 07/07. Even though I am satisfied with my level of preparation, my test prep scores somehow do not reflect this.
Three main reasons I could think of are as follows:-
a) Time constraint - Without time constraint, my hit ratio is around 80-90% but with clock countdown, it goes down to 85% in Quant and 65-70% in Verbal.
b) Silly Mistakes - I tend to make a few silly mistakes during test prep exams.
c) Not letting go - If I get stuck to any Quant problem, I somehow tend to latch on to it, rather than letting it go! Thereby it creates an iterative problem, both in terms of time and accuracy for the rest of rest of the exam (It also affects mentally on the Verbal portion).

To add to this, I find it real tricky to understand GMATPrep scoring strategy. With 17 QA questions and 15 VA questions wrong (during the early stages of my preparation), I had scored 650. But again with 6 QA questions and 14 VA questions wrong, I was still able to hit only 680!

Please suggest me on my situation, considering the fact that I have only 10 days left!
Thanks for going through my problem & appreciate your help in advance.

You know what your issue is already it seems. First don't worry about # right vs # wrong. Even with a 49 in quant I still have about 12 wrong. Let the questions you don't know go... use a solid guessing strategy to raise your odds and move on, there's no reason to waste time on a question you will most likely get wrong anyway. Use the time on one you can get right and use that to your advantage. The silly mistake issue, that's one I had as well. The best way to get over that is to slow down a minute and read the question and then answer. Often I would overlook things like LEAST or ARE NOT where you need to really pick that up. So reading then understanding what is being asked will help with that. Otherwise you appear to be in good shape.