I ordered a second carb for the green bike. Installed today. Followed usual recommendations: Jets 115/30. Mixture screw turned out 1 1/2 turns. Needle set 3 notch from the top. Black bike will get carb installed tonight. My 2 sons bought Hawks. One of those bikes registered, no problem...out the door with a plate. I hate it for Ron B. Now looking for an air filter replacement