Venkata,
Overall your scores look good to me and aren't much different than mine, maybe a bit bit better, when I was using the PM Exam Simulator and preparing for the exam. Don't get discouraged. This is a marathon you are training for and it is very challenging. Keep reviewing your weak areas and further your understanding. I don't think it is necessarily a bad thing that you are reading through the question 2 or 3 times. It is very important to read through the questions carefully and look for key words that can lead you to the BEST answer or the NEXT step. It can be a good practice to read the last part of the question first to see what they are after which can then help you read the question in that context.
Keep using the PM Exam Simulator in your preparation. It was by far the most important tool for me in helping to prepare me for the actual exam. I would not have passed without the training in provided in terms of both expanding my knowledge as well as helping me to pace myself for the 200 question, 4 hour marathon.
Cheers,
Mark