Hi Guys, I did do the extra ground cable from the battery negative to a bolt on the head but that didn't seem to help.

I'll have to see if I can find another distributor somewhere, but now that I think of it, I previously ran into an instance where there was water in the distributor cap on the same machine. It was pouring rain when I was working on it and didn't think to check the cap. I'll do that tomorrow morning.