Smoke Out of the Exhaust

Is the smoke out of both sides or only one side? Would you consider the possibility of sucking oil due to bad intake seal? What are the valve stem seals? Are they there?

Rings seat very quickly, I doubt that ring seal is the cause, unless the cylinders were way over oiled during assembly......then the rings literally skate on a film of oil on the cylinder wall instead of the cylinder wall itself.........that will put a kiebash
on ring seal.