I was out riding on some dune today all going sweet got about 30ks up the beach went i pulled up and switched the bike off. Then when i went to start it nothing happened kicked for about ten minutes just popped a couple of times. Checked for spark which it had but seemed a bit weak. My motor has only been rebuilt recently is it true that woodruff key can shear due to wrong torque on flywheel. has any one heard of an australian bike shearing a key?