Thanks for the replies. The actual adventure on this engine took us through the usual, carbs, intake items, coils, stators, and even a second top end., etc. Finally in a start over mode, a pressure check of the case revealed that it was losing about 1#/minute. I split the case and replaced the center gasket. Also replaced the crank seals at the time. Post reseal, the pressure check dropped less than 1# in 30 minutes. Engine runs great now.