ohh, now i cant tune my 26mm oko caby, it starts but backfires the tiniest bit and cant idle for to long, then when it starts (after i keep restarting it and then it warms up) and i go for a ride it goes fine, as i let go of the throttle it starts to backfire like only once or twice, and it idles fine, ive done my valve clearences, and all my electrics so it cant be that, anyy ideas