I have step 2 ck in about 2 weeks time. So far I think I'm pretty good at Cardio, Gastro, Nephro, and Pulmo. On the other hand I suck at IDs, hem/onc and surprisingly endo. I have trouble remembering which organism causes which and so forth. How did you guys get these areas down? And how heavy is the ck with IDs, hem/onc and endo?