I'm new to karting. I just bought my son a Toy-Rocket Hyperion with an Animal set up for alcohol. (I also bought a Desperado with a flathead for myself to run the adult class). My son is 8 and will be starting in what they call the "novice' class locally. We will be running on a 1/10 mile asphalt track. Just wondering what size main jet I should run in the animal (at least for a starting point). The class he is running requires a black three hole .250 restrictor plate. We are just over sea-level for elevation. Any ideas would be appreciated!