I am taking ck before step1 since my clinical knowledge is fresh.I took UWSA for CK ,it gave a prediction of 209. After a week I took nbme 4 and my score dropped down to 193. I had 51 incorrect answers. I have watched Kaplan videos 1time and done uworld offline 1.5 times. I have postponed my exam by 2 months now. Need advice regarding how to improve my score.thanks in advance.