don351, have you ever tried rolling along and putting your foot on the clutch, you hear that horrid grinding noise, yeah thats your kick start gears just grinding away. if you kick hard enough you can gaurentee yourself your going to break something big time. i can only advise to not do this.
i dont know the repercussions of this but one time i jumped a set of doubles, first fine but on the second i lost my footing and it unfortunatly the kick starter got caught on my pants, when i landed there was a nasty nasty grinding noise which i didnt like one bit, i would hate to think what would have happened if i was forceful on the kick starter.
PLEASE DONT DO IT, just get a lifan, gpx, bottom end or a new gear / clutch assembly or whatever you need to alter this, hopefully roost or something more knowledgable will come through with some more answers for you.
Cheers, Tony.