Streetfire Ignition Only Likes Accel Coil

I've been having a similar problem with my Mallory Hyfire box. Not sure its the same problem, but I'm very suspicious of MSD now. I had luck getting my car to run when I isolated the box from electrical ground, just threw a shop towel underneath it. Here's the thread of all of my problems with the box. Still waiting for warranty number two to come back.
Mallory Hyfire Ignition problem