Anecdotally, we are being told that customers who reach about a 75% correctness on the simulator are able to pass the exam. So you have to improve just a little bit. But of course I have to place a disclaimer here: Your results may vary.
You say that you feel that you are "going to get comparatively less output out of studying more from here ". Does that mean you feel ready and comfortable to take the exam?
If yes... go ahead and take it.
If no... study for another 2-3 weeks as you say.
But my recommendation would also be to continue taking more sample exams. You have 6 more to go. You can only get better and learn more from these.
I have a feeling I am/have peaked in terms of my perpration and doing simple marginal analysis..I feel i am going to get comparatively less output out of studying more from here on unless i provision for 2-3 more weeks.
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