Did you find the issue? Curious because I was just recently chasing this exact issue but it would randomly miss, other times run clean. I threw the kitchen sink at this thing (new fuel pump, regulator, coil, switched my pick-up wires to the shielded wire, etc).
After 3 weeks of trying to figure this thing out, it turned out my distributor bearing had come apart and caused the rotor to not spin true. I noticed my cap had scuff marks from the rotor making contact to it which made me tear it apart and holy S#... the bearing was completely trashed. Popped a new one in Sunday morning and it ran clean.
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