I don,t know why a bad pickup would booger the ground as it is only sending a small pulse to the igniter. Either the igniter or the wire from it to the coil is your culprit. The Procomm impled the wire was bad. That's where I would look first with your multimeter.

A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. Herm Albright (1876 - 1944)