This is the best carb for most 66/80cc 2 strokes. Promise
5mm Jet Kit - https://ebay.us/SzGxMn
Best Carb - https://ebay.us/EqIISy
All Metal Throttle Assy - http://custombuiltmotorizedbicycles.com/suggested-how-to-upgrade-throttle-assembly-for-motorized-bicycle/
https://hughesmotorized.com/the-best-carburetor-for-motorized-bicycles-how-to-clean-service-carburetor-long-version/