feel sorry for you, possibly it was that 30% grey area from where you had the critical questions. practice tests are never a bad choice. they always give a good measure of our level of understanding on each subtopic.
I took many practice tests same as you and could only succeed on my 4th attempt.
no practice test would ever match with the actual test. personally, I felt the real exams is all about how well you can apply your knowledge in the given time.
