[horsa]

Might be good to verify the cable from the coil to the dizzy is good. Breaks, bad connection or corrosion would prevent the coil from being able to hand off power and it would overheat and produce intermittent performance. When restoring the dingo recently, I had very similar issues which symptoms would have indicated a fuel issue. Vehicle would start from cold and run smooth a bit before seeming to have a fuel starvation issue with rough running and then stopping. Couldn't restart immediately which would have seemed like the engine was flooded or we had a vapor lock issue. Coil was extremely hot though after a race car mechanic suggested it was an electrical issue. In out case is was coil issues and this resolved everything. If it ends up being the same situation for you, a heat shield for the coil, or modification of the mounting bracket to get t further away from the head might help. Alternately getting a coil that is rated for high heat and for shock since some will fail if bounced around too much.