Thanks for your reply. i have not taken mag 100% apart yet, but no damage that i can tell. Spring is good,put another half turn on it. Lag timing is at 20 degrees according to specs. Spark jumps 1/4 inch bright blue. Today i turned flywheel by hand, belt pulley turns exactly the same time with no play. but i did notice that there was a couple of inches of play from side to side when turning the flywheel before it actually engages cam gear. Maybe some teeth have broken off on the crank or cam gear. Got 125 psi compression on both cylinders and getting fuel, just do not know why it will not even fire at all.