another hq member said check the flywheel , well thanks !! the flywheel was lose ,but.... my buddy said that the threads wear stripped. he's going to try and get a nother nut on there and see if it vibrates. im looking for a new fly wheel and i guess a new crank as well. ive seen some stock cranks on e-bay right now ,soooo i might go that away.moneys tight right now and im not really wanting to spend $400 on a crank , im still working on my kfx 400. it sucks trying to work on 2 bikes!!!!!! at least i can ride my 400(working on a swing arm(+4or6) and cam chain needs replaced)
thanks for all the help!!