A thought!
Since VTA was invented by USVTA and those that raced at the Snowbirds may be showing up to this race it may make sense to just run 25.5 motors. Everyone already has them as most tracks run the 25.5 rules so no one would have to go out and purchase a 21.5....
Hopefully Tim can just contact ROAR and make it happen. If not, no worries. I know guys at our track are all set to run 25.5 as they assumed that the ROAR rules where pretty much inline with the USVTA rules, since USVTA came up with the class.