Thanks for the reply Mark. The reason for my fluctuating scores is not because of lack of study or "slowing down". I find some of the questions on the simulation PrepCast exams to come "out of nowhere"; I.E, not from the PMBOK so unless you have been a PM for ever or have studied PM theory for 30 years, there is NO WAY you can know all the various topics outside the realm of the PMBOK (example: WBS Standards from PMI). So all I can keep doing is doing more practice simulation exams and checking every single answer right or wrong. One more week and a half and this hell is over! Cheers.