I sourced a new coil from Besslers. Thirty freaking bucks. If I would have known it was that much before I trudged all the way back to the gate, I would have just bought a brand new MSD or something. Anyway, I still didn’t get spark on #4, so I dug further. As it turns out, I think I was only running on 2 cylinders, because neither #1 or #4 have fire. I did a complete test, first swapping OC1 with OC2 and then IB1 with IB2 on the power transistor. While switching the coil outputs changed the spark so that #1 and #4 had fire and #2 and #3 did not, changing the inputs from the Megasquirt had no effect. I’m going to try the other you-pull lot here in town this week to get a new power transistor and that should get things working again.