Well, I checked my suspect ATI damper today for slippage and did the recommended piston stop test by marking the damper at both clockwise and counterclockwise points where the piston stopped against the tool. It was dead on the (0)TDC So I still of yet have to find out how my motor is even running at 50 degrees. It doesn't overheat and starts on the dime hot or cold better than a new car. My friend has suspected that my old Distributor with its light weight springs is advanced early in the cycle, combined with aluminum heads and sufficient bleed over from the split pattern cam allows it to idle and run. Once my new Distributor arrives, I will test and tune accordingly and let every one know what gives.