[Raptor]

Well, I know from talking to them before that the block did have new BS bearings in, the machine work was done by Napa. I just got off the phone with Alex, it was assembled without threadlock and at the wrong torque spec which is what I had suspected. The turned down ones are somewhat difficult to get correct torque to anyway, there is no surface to clamp the shaft to that isn't round so a few tricks get employed to get it tight without flexing it etc. Sounds like they were close, took most of the right precautions, soft jaws etc. The lack of locktight is likely the major issue. This is one of those things that you hate to see, could have been avoided, but ends up being another one of those expensive learning experiences. Which brings up my old thought of having a engine building basics area or thread that goes through step by step on a normal rebuild. A good place to get answers for people with the ambition to do it themselves without finding out by accident all the places that have bad info, like the many places in the manuals.
That and the simple tricks that make all of it easier.