Hi,
I reason you are still missing the basic concepts. The eight guides are a great resource alongside with the Mgmat CAT tests. Depending on your situation, those guides are not to be rushed through. You actually need to go from learning to knowing to mastering all the concepts in those guides.
Only a certain number of concepts are tested on the gmat. When you take your CAT,(I assume you have access to the mgmat CAT'S since you have the guides) generate your section results by topics, and drill down until you master the concepts.
Also find below the links below and dedicate time to go through all the topics covered. It is also paramount from where your scores are that you do not rush into another exam. In addition the beatthegmat practice questions are additional practice with video explanations which I think will do you a great deal of good.
Do not loose heart, quitters never win and winners never quit. It will also help you to visit the I just beat the gmat forums and read other students success stories, It will give you a drive when you are low, but be sure to sift through and see which relates to you. Don't read threads that you wont learn from.
I look forward to you sharing your story in the near future from 320 to 700, to also encourage other students that might be going through what you have gone through.
Regards and all the best with your future preparations.
www.manhattangmat.com/thursdays-with-ron.cfm
https://www.manhattangmat.com/tutorials/
