1973 340 issues.

Acetone and ATF? That sounds pretty potent.

Were you able to put some oil in the cylinders or were the latest compression numbers with oil in the cylinders?

Yeah, not necessarily any correlation between smoke and compression depending on the conditions? Under what throttle conditions did you see the smoke from the odd side cylinders? (Passenger's side in the British Empire, driver's side over here in the US.)

Did some research on homebrew mixes to free potentially stuck Piston Rings. Acetone and ATF fluid was one of the favorites. I'll leave it for 24 hours and see if it makes any noticeable difference. Then Ill siphon off the mix and fire her up. I have not put any oil in the bores yet for the Com testing. The new results are purely WOT.

I see smoke under WOT and hard acceleration only.