Don't feel bad, I went through "almost" my whole ignition trying to figure out a random missfire while on a road trip out to MD, started with coil after a test showed slightly out of range, went to msd box: swapped back to HEI, swapped cap, rotor, and wires, checked grounds, messed with timing, and carb adjustments. Never dawned on me to check the plugs I had put in a week prior to the issue happening, sure enough, porcelin crack on #7.
Oh and one more, chasing another misfire, again cap, rotor, wires, checked the plugs, nothing worng with any. Look to the msd box,
![BLAM :blam: :blam:](https://cdn-0.gbodyforum.com/oldsmilies/BLAM.gif)
The theft safety wire, had come un wound and was just barely
not touching a metal support under the dash, so every bump, or quick take off, contact would be made and the car would sputter, yup I really felt dumb on that one. :lol:
Nice progress on the bus though, you work very quickly. :shock: