Hi Django,
I noticed in one of your prior posts how you were planning to take the GMAT in 2013. Did you end up taking the Test as planned (and if so, then how did you score?)?
As far as scoring a "perfect score" is concerned, that should NOT be your goal. Thankfully, Business Schools don't require THAT level of performance, since most Test Takers will never be able to perform at that level in their lives. Your goal should be a score that will make you a competitive applicant. Unfortunately, there's no way to asses if you're scoring at that level from just doing practice problems. Taking FULL-length practice CATs at regular intervals is the only real way to gauge your progress. When you're stuck on a GMAT practice question, you should post it in the Forums.
GMAT assassins aren't born, they're made,
Rich