Check to see if your dist shaft is bent. Take the cap off and the rotor and have some one crank it and look if it wobbles. Ignition is its own thing should be good on all wires. Something is not right with the system. Seriously thinking distrib.
To bad your not closer I would throw it on the machine and see what is going on to at least eliminate it.
To bad your not closer I would throw it on the machine and see what is going on to at least eliminate it.