Your low Verbal score is quite a concern. It may mean that either you were not fundamentally very sound, or lacked the insight to apply the learnt concepts quickly.
What was your strategy when you prepared ? Did you become strong enough in one particular topic,and then apply those concepts by practicing a sufficient number of questions from that topic ?
What was your level of comfort with the passages,which can at sometimes become too obscure ? Did you practice enough RCs so that you become comfortable with various topics from various fields ? In RC , after you are done with the basic strategies, practice quality passages as much as possible and analyze each and every question.
So the key in SC and CR is to grasp a concept well and then apply that in questions.Keep revising the concepts and keep practicing more questions.
For RC,go through the basic strategies and then practice,practice and practice yet more!
My 760 debrief