Setback. Ran the engine up to temp today. Small coolant leak appeared. Not sure yet where it's from. Also valve ticking on the left cylinder. Will require some disassembly to fix that, as well. the good news is that my new voltage regulator from Murray's Carbs is working great...14.2 volts at the battery and my electric cooling fan mod is working. I would prefer that it came on a bit sooner. though. maybe a new thermal switch?