Hand position, rev and speed control also have an effect on how a heavy oil ball reacts on drier than desired conditions. If you are going to bowl in high school then you will be bowling on different oil patterns than the usual house shot. Do you know your bowling style? Any chance of getting a video so we can better match a ball to you? DV8 makes a great variety of balls (as do some other companies). Any questions about DV8 just fire away!