My plan of attack in order:
1. Change the plugs (test run)
2. If 1 failed > Change coil (test run)
3. If 2 failed > Lock distributor (test run)
4. If 3 failed > Send the ignition for repair.
The first two steps are quick and easy.
The third is more involved.
The fourth, I already have a Mallory engineer lined up for test and repair if it gets that far. I may squeeze a leakdown test in there somewhere if my buddy brings his kit over in the middle of all this.
If 4 fails I might have a large liquidation sale and buy a Hell Cat lol. Just kidding of course.