Im new to motor bicycling and im almost done with my first build. I have a blacked out 29 in onex genesis bike all set to go just have to mount chain tensioner and gas tank with feul lines. Everything else is ready to go but i have a major dilemma. the only way to move the bike forward with the back wheel to spin, somewhat freely, is to take the spark plug out. Even without it in the engine seems like its always in gear and turning over ( without the spark plug and feul tank). i pull the clutch handle in so its in 'bike mode' but its really not. i need some help because i dont no what to do from here. Anything will help!