Nice work, check out red beard, he has a similar problem, he upgraded to a bigger 32tooth sprocket, on another video I seen the guy turned the guide for the belt around, so the the cone part was facing inside leaving the belt more wiggle room
Man I got rid of it a while back but launch was pretty good top speed probably 25-30mph I’m guessing since it didn’t come with a speedometer. I miss that thing.
Bought a coleman version of this for my kids few years ago they blew the 196 up pretty fast I put a ducar 212 on it they rod that motor for 3 years tell jumping it broke crank I'm putting a wc223 on it now with charging electric start