Just so you are aware, the guy who runs MLIC, the test prep company Roger Van Dijk mentions, regularly posts salutary accounts of course attendees on GRE forums (google them and you will see) as advertisement. I know people who have taken the course, and they were not impressed. Not saying this is one, but you should be aware of this. Also, I echo what others have said: getting rid of careless errors on the math section will significantly raise your score. The math is easy. It is not having done it in a long time combined with racing the clock that oftern leads to lower scores- at least for some of us.