HI JUST REPLACED ALL GASKETS ON MY DT AND WILE I WAS DOING THIS THE KICK START SHAFT FELL OUT , I PUT IT BACK IN AND PUT BIKE BACK TOGETHER BUT AFTER FIRING HERE UP I HAVE FOUND THAT THE COG ON THE SHAFT IS NOW GRINDING , I PRESUME IT ITSNT PUSHING BACK INTO PLACE SO I PRESUME THAT THE SHAFT NEEDS TO BE PUT BACK A CERTAIN WAY ORMAYBE ANOTHER PROBLEM, ANY IDEAS ???? CHEERS DALE

Its hard to say what the problem could be but there is a friction clip on the kickstart gear which has a protruding loop section which should go into a recess in the crankcase casting, its possible this is not located correctly and could cause the problem you have mentioned.