Hi ish137,
Before providing some specific advice, I would like some more insight into your GMAT preparation and goals.
1) Describe your study routine. What resources have you been using to study? For how many hours a day have you been studying?
2) When you took your practice tests, did you take them under realistic conditions (e.g. in a quiet environment, no extended breaks)? Did you complete the entire CAT, including the IR and Essay sections? Also, when do you plan to take another offical MBA.com exam?
3) What are the MBA programs to which you plan to apply? What deadlines are you targeting?
4) What is your GMAT score goal?
5) Have you mostly used the Official Guide to learn and practice GMAT quant?