Yeah, I see what you're saying. Maybe it really isn't 100% prep. but more like 70% prep and 30% mental. The first time I took them I was nervous as all hell. I knew how much was riding on my scores and a blew it (well and least in my world). Realizing it was all in my head, I took a month off from hardcore studying and just did section work before the Dec test. When I got to the test center I just put myself in a frame of mind that was like "whatever I don't care, I'm gonna kick butt and nothing is gonna stop me" and it worked. You just have to learn to not take it so seriously. That can also mess up your score. Maybe that's what happened to you. I wouldn't rule out taking it again, but the next time don't psych yourself out so much.