gbisnik1, please try and practice under timed conditions.
Say you practice 41 verbal questions.
Have a look that how many mistakes you do in the questions 1-10 or 11-20 or 21-30 or 31-41.
is it that you fumble in the initial few questions?
or
is it that you get tired and are not able to perform optimally?
or
is it that you do not have enough time in hand and miss out on the last few questions?
Please preserve the data you collect with each test.
If you fall in case 1, then it basically some priming of the pump

, try and practice a few questions as starters before you actually give a test. Try and observe that is it the time when you are not at your best? (say maybe after work , or maybe early morning when you have just woken up)
If you fall in case 2, then it basically means that you need to practice a lot. Try to sit with a set of questions, do practice in little chunks, maybe work for 75 full minutes. Try work on your stamina, both physical and mental.
If you fall in case 3, then it would mean that you need to work on your pacing/timing. A common pitfall is spending too much time on a couple of questions. Just try and avoid questions basically you can resolve but shall take too much time. It better to sit and review the shortest possible way to solve a question , rather than spending 4 minutes on a question.
As a thumb rule do not stop on any question for more than 3 minutes.
Also keep a log of mistakes/questions which took you too much time.
Review them say every weekend...and you we shall see you going places!!