I have bee studying for GMAT for last one month. I have covered official guide 12 and official guide 11, princeton review, Kaplan verbal and Kapan problem solving. I am scoring descent on the maths, but there are still inconsistency in performance in the verbal section. I perform badly in one part (say RC) in one test, improve on it in the next but then perform badly in other part (SC).

I have approximately 80 hours before my GMAT. Please suggest how should i plan to overcome the inconsistency in performance in the verbal section.