My Suzi runs great but just off idle its rough, when I open the throttle it is flat or rough until it kicks and then takes off smoothly. New seals, gaskets and top end. Carb clean, needle clip in middle position, low speed screw 1 1/2 turns out. I tried adjusting it but not much better. Using Valvoline 2 stroke motorcycle oil, 25:1, its a cast iron jug. When the engine is cold its worse. Yes this is definately OT but there isnt much out there for 2 strokes and this bike is pretty rare, 80cc on a moped frame basically. Any ideas? The service manual states that the more open the low speed screw is turned, the leaner. Seems like it may be rich because its erratic.