Hello, I am trying to repower an old Tote Gote trail bike using a new Briggs 97332-0035 engine. The engine is new, has 3.5 HP but I am having great difficultly designing a throttle return system on the engine so the twist grip throttle can be used. The engine is designed for a tiller, snow blower, etc. Does anyone know how to adapt a throttle return spring system on this new Briggs engine? Is there a better off the shelf Briggs engine I can buy for an easier re-power application? Please help! Thanks!!!!! Ron