i will hook up the ez start and the green light for the engine will be on but the ez start will just crank really fast but it fails to turn the engine over, sometimes it will start turning over after about 10 minutes of struggling with it, i have made sure the engine isnt stuck at top and if i feather the ez start button it helps a little bit but it will only turnover once to three times at most before spinning again and not turning the engine over and i know the ez start motor is fine cuz i can hear it spinning, is there a gear that isnt engaging or that needs replacing.