Missing lots of questions will absolutely bring down your score
. That said, there is nothing particularly special about getting small numbers of questions wrong all in a row. If you miss a string of questions at the beginning of the test, you still have the opportunity to improve your score by answering the remaining questions correctly. If you miss a long string of questions at the end of the test, however, you will have no opportunity to answer more questions, and as such, no further opportunity to improve your score. The key is definitely pacing. In order to do your best, you need to make sure that you leave yourself enough time to answer each question. And don't forget: answer all the questions, even if you have to guess. The penalty for not finishing is huge!
I hope this was helpful,
Dave
