Hi all, I bought all 4 exams from PMstudy and just finished the 4th exam. I bought them because I had read many times that they are the closest to the actual exam and are the best to test yourself. However I have just found the 3rd error among the 4 tests and sent it into PMstudy for review. They haven't responded yet but I am looking at the right answer in pmbok right now. The other 2 they said that there was an error in the exam. So now I am concerned about the quality of these tests.