Electronic ignition issue

Thanks guys for your help and suggestions. Got the boy to do the back and fourth on the crank while I watched the rotor.I think the root of the problem is the chain as the rotor did not move until he actually moved the piston downward. It also looked at about 10° after is when the rotor actually looked more in alignment with #1 rather than #3. When I get back home we are going to revisit the problem but I think in the end we are going for a rebuild then we will know for sure what is inside the motor.At the moment it is a mystery as to cam,cam maker etc. Now I am not sure if it would be a wise decision to install new chain and gear set without knowing what is inside. Thanks Jeff