Bill the engine runs great.
When I tore it down, I took it to one of my neighbors who has a engine machine shop. He said I was lucky that the po must had changed the oil regularly, because the bottom end was still tight. He told me that not keeping a clean air filter in it will wear out the top end. He boared it out .010" over, new piston and rings, lapped the valves, and removed the balance gears, and installed new oil seals ( the front one was loose just hanging on the front of the crank when I removed the engine).
No more smoking, oil dripping and plenty of power, it should be good for another 30-40 years.
What a great little engine