[Mike1291]

I will also cast my vote for the distributor. I had a similar running issue with mine. I tried to fix mine and even had it rebuilt several times and I could never get it to work right. Ended up buying a new one and no issues with ignition since. I don't know if the casing of the distributor can go bad but it very well could be.

Try swapping yours with a new or known good one and see if that helps