I've taken the test 3 times, feb 04, august 04, and Jan 05, and got the same overall score each time. Since the first test I worked only on quant, and my quant score actually decreased. My scores were the 42 quant, 39 verbal, and 41 quant, 40 verbal the second and third time.

I used the OG between the 1st and second and had a

Kaplan tutor come between the 2nd and 3rd. After I got my score I put all my books in the closet and haven't looked at anything since.

Now that I'm no longer burned out I want to give this another try. My problem is tha I do well on the practise test, but then draw a blabk and run out of time on the real test. I think the reason is that my math skills on the higher level concepts just aren't good, and memoizing fration to decimal tables or learning

Kaplan's backsolving strategies doesn't help me get better at the underlying math.

What would be the best way to learn the more difficult math concepts necessary to improve my quant score? It goes without saying that I should practise the questions in the challenge and forum, but I need to learn all the skills before I can practice them. I'm hesitant to try

Princeton Review or another prep course, as they all seem to teach only basic math and then focus on their tricks for beating the test.

Should I get an algebra or geometry textbook? I don't want to learn tricks, I want to have the confidence of understanding the concepts.