Thanks for the concern, fellows. Golf was looking good this afternoon. Everything looks perfect inside the motor. Except for the lower compression ring on the right cylinder. I installed it upside down. The bike was ridden on the street for 600 miles, put through a long dyno session, and raced for a year. Why it started smoking now, rather than before, is a big mystery.
Tomorrow I am taking a day off from work, will get up at 5:00, and I will put it together. Then, another dyno session will be scheduled.