Actually I believe that's what's totally going on. Before I had it a kid had it. I talked to some people and they say 16-59 should just be perfect for that track. Unlikely that would be true for someone in the hundred and seventy-two 180 pound range. But not 230 plus gear..
I only tried it on an open road basically around my neighborhood one time... I just got the new seat in the new (to me) kart at the time and had a neighbor lady after a few blocks shaking their fists and yelling at me LOL... I figured I better just keep it on the track... But I reckon that some certain gear I'll find the rev limiter...
The bigger seat is probably actually lighter it's a much better quality and manufacturer. It's my fat *** LOL...