Check the bearing crush.
This link may help:
Mahle bearing failure

A couple of pics from my own engine which hadn´t even been started, just turned over for assembly.
Bearing crush was 0.008-0.010" instead of recommended 0.006". All eight rod bearings looked the same.

upper.jpglower.jpg
Last edited by MikeN; 06/16/22 03:57 PM.