My 360 build

This is real progress! Lookin good! What are you installing the balancer with? It does look like maybe it could go back a little farther.......but it's difficult to tell not being right on top of it. If you're not using a balancer installer, be extra careful. Sometimes it can deceive you. Sounds like lifter preload is right in the ballpark.
I got it started by hand and tapped it with a block till I could get to the threads with the bolt then just tightened it down with the bolt.
Another question. I got all the valve train installed and marked the pushrods and rolled it over by hand (ratchet on the crankbolt) to check for turning. Im not seeing any rotation? Does it need to be rotated faster to rotate the lifters or should they turn when cranking by hand?