I am training for my ppl at a cessna pilot center. I am getting towards the end of my training and begining to take practice written tests. I am not doing to hot on the practices. Its wierd though because I know everything my instructor has ever tought me. I have to make above an 80 on the practices to take the real one and I havent yet, the closest I have gotten is a 78. So is there anything I can do to improve my scores. I have a Gleims book, but I just havent been able to do very well. So, ANY help would be great guys, THANKS!!