Now, I can kind of understand from the facts being stated from Vets. What I still can’t understand is how a pro auto racing series like IMSA Weather Tech can restrict their motors and weight and a pro kart series can’t. May be one day in layman’s land where a 125cc engine can be restricted! (Moto Cross). Maybe they should change the rules so the engine makers can do so. Oh yea, there not American! And to add, money from three engine brands is better then one. Last time I checked , Americans liked to have options!