i went out and bought a sparkk plug today, i put it in and it ran. i went around the block and as usual i didnt have the choke just right so when i disengaged the clutch the rpms went ski high, i then proceeded to ride it home which was a few hundred feet away, before i reached the driveway i turned it off. when i went to start it again, there was no compression and not the slightest chance of starting. so far i took off the cylinder bore, checked for broken needle bearing and checked the rings. looks to be in good shape, i also checked out the gaskets and they too are in good shape. why is there no compression anymore? and why wont it kick over? please help!