Oh yah , put this on me!!!
Actually I just spoke with him and they are going for another test run, Ken suggested to run it at low boost for a while to not over pressure the rings, as did HAstings. I can agree with that from using rings way over their design parameter.
I told him to watch the temps carefully , that is the most important in my book, and oil pressure obviously.
When I was working in Anchorage the diesel shop dyno operator ran any engine for 1 hour no or light load, when up to temp, 2 hours of low to full loads and everything in between, then 1/2 hr at full load. So that is kinda what I go by also.