My truck wouldn't start the other day when I was leaving work. After a few mins of troubleshooting, I found that the center conductor of the distributor cap was roasted. Looks like it got so hot that plastic around it got all crispy and brittle. I have the Jacobs Off Road ignition, which puts out more than a stock setup, but never seen this before. Had a Supercoil on a different vehicle with no problems. Only about 5000 miles with the Jacobs setup. Anyone else seen this before? Maybe just a bad cap? High resistance in the center pin, plus lots of voltage equals lots of heat? Anyways, seems to be running fine now with a new cap, I'll have to keep an eye on it.