toksavuln -
To answer your question you will definitely score better if you can get a few more questions correct. According to your original post you get to about 27 questions and guess at the last 10. I had a student who guessed on the last 10 and earned a 46...but he basically got right 26 of the 27 that he worked on. So perhaps you are not getting all 27 right?
If not, find out what types of questions you are still missing despite the slow pace. It is okay to devote time to questions that you are going to get right, but to devote the time and still end up getting them wrong is not a good tradeoff. The big problem is that I guarantee that there are questions in that last 10 that you could get right and do so in a reasonable amount of time.
For example, I sat for the actual GMAT again recently as I often do. On the Quant section I was certainly behind at question 25. Luckily I was not paying much attention to such things because I did not give it much thought and here comes a string of data sufficiency questions and quick problem solving that took about 1 minute each, so that I was back on time by the end of the section. Now, in order to reach those questions that were so comfortable for me I had to guess at a few earlier on - questions that were not looking good ON THAT DAY. These were questions I could normally solve but for some reason I was not seeing it then - during the test and that is what matters. So I moved on and things turned out well with a 770 for the day despite being not being in top form (a little tired and distracted on the day).
I am sure that a wide variety of strategies have worked well for various test takers, but I cannot recommend that you treat the first 10 questions any differently than any others. Basically, the simple strategy is this "If you can get a question right in a reasonable amount of time then do so and do not worry too much about the clock. If you cannot see the finish line (in other words you are confused as to how to start a question and you are not sure if you can get to the finish) then you might want to guess and move on. This will leave time for you to see most if not all of the questions and find some that are more comfortable for you. This is true for the first 10 as well as all of the questions.
It does not make sense to have rigid time goals as these will vary depending on what you have addressed so far on the exam. Maybe you get several D.S. in the first 10 as well as other problems that are quick for you and you are done with those 10 in less than 20 minutes. This is neither good nor bad as things will average out. Just do not devote too much time to a question that you are not likely to get right anyway (even in the first 10).
