I scored a 650 on the manhattan gmat (QUant 38 verbal 41). I am told that there is a 50 point sway + and -. Since then I have focused only on mistakes and honed in on the reason I got the wrong answer. I realized either an approach error or a lack of knowledge. From this point, I realized that I am much more comfortable with the og material and no longer struggle like I used to.

Are there any test takers that have taken the manhattan gmat and consistently scored their desired goal yet bombed the real deal?