Keep getting 690 on GMATprep. Exam in 1 week. Goal= 710

Hi All,

I was hoping I can get some insight from Gmatclub members. I have scored 690 on my last 2 GMAT prep exams, and I have an exam coming up next Saturday. My goal is to score 710 or better. Below I provided some details to explain my strengths/weaknesses.

GMAT Exam packet test #3 (690) 4/5/14
49Q -10 incorrect
(In quant, I made some silly mistakes on 4-5 questions.)
v35 - 17 incorrect
(I only got 6 of 17 SC correct!!! My RC & CR was in the 75-80% accuracy. I focused the next week on SC mostly.)

GMAT Exam packet test #4 (690) 4/12/14
49Q -6 incorrect
(I got 4 less incorrect, yet I still have the same score! My quant percentile actually went down from 85% to 83%. How is this possible? Making only 2 or 3 incorrect for entire quant section will be difficult.)
v34 - 12 incorrect
(I made 5 less mistakes but actually got a lower score. This was mostly due to the fact that I ran out of time and got the last 6 of 7 verbal questions wrong. My sentence correction drastically improved to 65% and that is considering that i got 4 SC incorrect due lack of time in the end. It would have been in the 80% range otherwise.)

For Quant, how can I improve from q49 to a 50-51? I got 4 less mistakes this time (on 4/12). The 6 questions I got wrong, were spread out and not in the beginning or end of the exam. 4 of these questions I found challenging and made an error. 2 incorrect choices were silly mistakes here.

For verbal, how can I improve my SC speed in a week? My RC and CR were hovering around 2min a question with about 75-80% accuracy so that is good time. If I didn't run out of time, I would have gotten a great score. Clearly I need to cut my SC by probably 15 seconds per question and keep the same accuracy. Should I just keep practicing questions and make sure I do not go over 1 minute 5 seconds for each?

Any other advice would be helpful as well.

Thanks,
-A