As you can read n my "lash" thread, I may be zeroing in on my Digital-6 being bad/erratic. I have been running it since '05, and suspect it has been the source of my 10 years of huge spark scatter. I do know, however, that the brand new MSD retard module I was running with my 6AL digital in the '71 Challenger fried the ignition box. Running great, added the module, and instantly lost the ignition. Wouldn't work even after I took it back out. Cooked the box. I had to cut it out of the system to finish Rocky Mountain Race Week 2020. I had it in there for nitrous, and ended up having to put the spare box in and just manually retard the distributor.