Great job!

Also check the PCV hose for clogging.

If no change in smoke then assume hardened seals. There is a post somewhere on the internet that explains in detail (with pictures) how to replace the seals with heads still on engine. But it is time consuming and tedious!

No smoke on startup. Thank you!

Use a heavier oil like 10-30 and throw in a can of STP and see how it goes. Its not wroth throwing tons of money at it