Just a thought.
If the 'smoke' is black, it is likely fuel. If the smoke is blue, it is likely
oil.
If black, you are on the right track chasing down the fuel system/carb. But, it should have excess fuel visible and smellable on both the pipes (small smells, please.)
If blue and one sided (ex: left side), you may have either a left intake gasket leak or a left head gasket leak. And visa versa.
If the blue smoke increases in hard right turns, you most likely have an left intake gasket leak. If the smoke is minimum and the plugs clean-up and run better all by themselves, in left turns, you definitely have a left intake gasket
oil leak, probably from the
oil galley under the intake manifold.
If it is not at all sensitive to left or right turns, it could still be the left intake gasket, but a leak near the bottom of the gasket. And visa versa.
You have earned my Annual Woe-is-me Award in the Extreme Trials & Tribulations Category, Not Including Wives or Ex-wives, Engines. Give your friend Cracker this info and tell him next time i come up there (in a couple of weeks), you get a free beer.
Mucho lucko.