I still think it's your dist cap,I have had 2 go on me personally ( a little stumble cruising then just like you shut key off. no restart) and seen 3 more from friends. 3 were from "new" distributors. You might be able to flip cap over with wires still on.Look closely. This board recommended me to check cap BTW. I've also seen warped and out of round rotors twice. Which dist did you get?