[Alaska Jim]

ground the Dist with a jumper wire to the ground terminal post on the Battery to make sure the dist. is grounding properly. had a friend with an off topic car this summer had the same problem. my only suggestion was to ground the dist. That cured the problem. turns out the eng block had been painted with the dist out and the dist. was insulated by the paint. I was glad it cured his problem as I was out of answers. maybe this will help you.