[T Scott]

I'm not familiar with your earlier posts and maybe this has previously been covered but this sounds like a condenser issue. There has been a lot of chatter on the barn recently about junk condensers where the engine runs well when first started and then quits or runs poorly when hot and then will run again when cooled down. You may also have the regulator problem you describe but I don't think that is contributing to the issue of the engine quitting. If the battery has enough power to turn the engine over it should have enough power to keep the engine running for quite some time even if the generator is not charging. How about your wiring? All good connections, nothing loose, shorting out or corroded, for instance the wire from the coil to the distributor? Just a thought.