I attended NUMEROUS study courses, read several prep books, and still struggled to improve my score in a dramatic way. My goal: 5 P's.
I found that the only way to get to this level was to train the way my mind tackles these problems. The method? Lots and lots of practice problems that are very close to the real exam. I needed to do problems one after another and quickly learn what I did wrong. I was amazed at how quickly my scores improved. I later noticed that I was in fact approaching problems differently and not falling for all the traps.
For those of you who want to pass, or even overachieve, I recommend using this tool to prepare:
Best of luck to everyone!