that post did not say anything about the causes of crankwalk, just an easy way to tell.

and early engines 6 bolt and early 7 are like 1 percen of crankwalked blocks, I don't know how you can even use that as an example. I am not making a hypothisis. We make some changes to the thrust setup on the 2G blocks and I have never had an engine come back. I can get in to some drawn out explination about why this is the case, but I don't need to. I have seen and fixed the problem many times.