That would be me... too. The first time I concentrated too much on theory, not as much on working out problems. The second time, I worked out lots and lots of problems. I think taking the exam is two-fold... knowing the theory (which you can get from reading a reference manual that prepares you for the EI test) and knowing test-taking skills (which you acquire by practicing lots of problems). Although I've heard of people who simply passed by just practicing lots and lots of problems.