Got the mule back late yesterday and guy said he cleaned carb and replaced needle valve and set float. Hopefully this will solve the gas in oil problem. The fouling of plug was due to the foam air filter. It was deteriorated and when wide open throttle it pulled it into paper filter and starved mule of air causing more gas than air and foul plug. Haven't had time to run mule any so will report back when I have run time.
I had a guy come over and help as I don't know much about digital meters. My stator seems to be doing ok. Did a wire test from stator plug all the way to the regulator and then to battery. No broken wires. So it seems to be that I received a bad DOA regulator that I had ordered in so I will send it back and reorder then see