Thanks for the replys. I checked the crank with my homemade dial indicator (a nail and a magnet) and it appears to be true. What I did find is that there is 3/32in. of play in the flywheel due to a widend keyway in the flywheel.Am I correct to assume that this is the culprit? Is there a way to advance or retard the timing with this,or is it a lost cause and needs to be replaced. Again,THANKS for the help.