Ironhead Fly wheel end play?

My case has been welded and machined and is ready for reassembly
So I put a new timken set in my 74. Pressed in new race heated bearings to 275 and lubed the sprocket shaft (-25 degrees due to mother nature) bearings slipped on with little force, and followed the fsm to install second one.
QUESTION:
How do you determine correct end play? It doesn't move once the case halvs are mocked up.
clears the cases when spun

Rods seem center of case.


Thanks