Hello Alex,
Totally understand what you are going through right now, and I think most people who used Prepcast and passed the exam could relate.
Quite the contrary, I don't think the PMP exam includes many trick questions at all. The exam, however, requires you to know your study materials well in a timely manner. What you are reading an exam question, you have to know what role you are in, knowledge area(s) that you have to apply, and the tool/technique/process that follows. Once you master that, you will notice it takes less and less time to answer a question.
My advise is, keep practicing on the exam simulator, review the study materials, and read up on some of the lessons learned. You will notice your progress very shortly.