well, i wish i could say i used a scientific method and new what i was doing but i didnt. i was trying to use my cordless drill to turn over the engine and accidentally unscrewed what i guess you would call the flywheel. since it fell off, i took the opportunity to spray it down with carb cleaner and dry it off. i then noticed that there are dimples on the inside of the flywheel that correspond to holes on the driveshaft. after lining everything up and screwing the flywheel on, i tried to start it up again and it fired right up! i couldnt believe it. i know this isnt a very good way of fixing the problem but it worked. hope this helps.