[Mike Taylor 3601]

Paul,
You had small foreign object go through your bearing, but your clips from lifters couldn't have made through there,if got one of those in oil pump it would locked up oil pump.
You just had something small ,piece metal,alum.,dirt get in to bearing,good chance came out of oil galley in crank itself. If haven't ran brushes through oil galleys before,do that you be surprised what will come out of what looks like a clean oil galley in a crank or block.
Mike Taylor 3601