I have 2005 Kasea 150 cc go kart that the drive belt broke. I replaced the belt with the correct size, but since then the cart idle rough and will stall or hesitate when accelerating from a dead stop. Once it gets going it runs fine, but if i turn and it slows down it starts running rough, and or stalls. I have put it up on blocks and it seams to run fine, it only happens when it has resistance. Been trying to figure this out for about a few months. I hope you all may have a couple ideas on the problem that I can try.