I have a p200 motor installed in a 63 GL. I rebuilt the motor, and clutch but left the Cush drive alone. The motor has plenty of power and runs and idles well. The problem happens immediately when I'm off throttle, the scooter feels jerky and I find myself using the clutch whenever I'm off throttle.
Could it be the Cush drive? I did shake it when I had it out and it felt solid.
Or a jetting issue? Main-120, mixer-BE3, slow running-120, choke-60
Thanks