Mallory Hyfire Ignition problem

FWIW. Had issue with same set up as well. I bought the Mallory coil and intermittent problem went away...…….
Using a pertronix coil that I would assume is practically the same as a Mallory coil, but that's good to know.
I'm on an email with a tech, he's got some ideas on tracking down problems, so hopefully I can get it fixed asap