[OLDKID]

I've had similar problem on a few buggy's I've owned . It was vibration - and the spade connecters on the coil . Would look clean and tight , but run on jackstands in poor light you could see a spark jumping in conjunction with the miss . Would also appear on damp humid days . Super clean , extra tight , and a shot of silicone spray cured mine . While you're at it spray down all your wiring harness , connections , and components as I've seen other Gremlin sparks jumping around in the past . Amazing what you can see in the dark !