Richard,
I have looked at your results in our PM Exam Simulator and the first thing that strikes me is that you have never taken a full exam and answered all 200 questions. You have taken dozens of quick quizzes with 10 questions each, but you have never actually sat down for 4 hours and taken a complete exam. So my first suggestion is that you must take a full, 4-hour exam to see how you are doing in an "actual simulation". That will be the real litmus test for you to see how you are "really" doing.
And with that out of the way, let me also say that you will probably never feel ready to take the exam. I certainly didn't when I took it and it's not unusual for students to feel worried. What we also hear from those using our simulator is that the questions on the simulator are "harder" than on the real exam. Of course this is only their impression but it's the best we have. Generally speaking students feel that if you get 70% in our simulator then you should be OK on the real exam. Again... no hard facts to support that... just hearsay.
So... go ahead and take at least 2 full exams over the next week to check your score in a full, 4-hour exam. Then you know more.
Until Next Time,
Cornelius Fichtner, PMP, CSM
President, OSP International LLC