Ok, so i am checking out the enrollment for nationals set for San Jose, CA. If you check the regular sparring breakdown, they have grassroots, world class (including 14-17 black belts), ultra -- the usual. However, they also have a separate enrollment for "2011 U.S. National Championships - 14-17 year old additional Sparring Divisions". Aside from generating another enrollment fee, what is the purpose? Does anyone know?