I hear your struggle!! I'm at the point where I just want to take the exam already regardless of my scores! The low scores are very discouraging, but I found going back and rereading/scanning Rita's book and answering her chapt questions have helped fill in the knowledge gaps I had a bit. Also, I just keep answering lots of questions from Prepcast, Andy Crowe's book, and Rita's book. I'm going to give myself one more month of study and then taking the exam.