Hi everyone. I have a question. I just took the CSWA exam for certification and got a score of 150. My main problem was with the intermediate and advanced level exercises because I couldn't find the correct mass values. I did all the suggested preparation exercises for the exam and I always managed to do them, but when it came time to take the exam, I don't know what happened. 

I checked my sketch measurements and sketch relations every time, and they always matched what was shown in the drawings, but my overall mass was very different from the options presented in the question. Does anyone know why that happened ? Or do you have any advice on what I need to do to improve and stop making those mistakes? It was quite frustrating as I had been preparing for the exam since June... 

Thank you very much in advance for your help.