Its not easy at all to answer your question since you really give no info about how you prep. The best solution is to understand your problem and then try to eliminate it. if you tell us what you do in your prep, it might help.
Ok, since the topic is relevant, i will try to discuss a problem that i had with verbal..
Do you have a fixed strategy that you use for CR/RC/SC. Its very important that you do. Otherwise, your performance curve is gonna be unpredictable.
When i started off with SC/CR/RC, i was too impatient to get on with it and never tried to develop a strategy. i often made mistakes i shouldnt have. mistakes like, misreading a question, not interpreting a passage sentence correctly etc. If i had developed a checklist of things to go through when doing the verbal, especially CR, i would have done much better on my verbal (39V). oh well, atleast i hope you guys do what i didnt.
live and learn
Praetorian