I did not realize it until just now reviewing the data, but the worst case oil temp was 230 deg F and oil pressure just made it to 50 psi.Sounds more like an oiling supply issue than the oil used and the bearing clearances. What was the maximum seen oil temperature? The "low" oil pressure was also caused by the larger journal bearing clearance along with possibly too hot of 10W-30. But oil pressure doesn't mean lack of lubrication (which is what you seemed to have) as long as the PD oil pump is moving the same oil volume - which it should have been doing. If the oiling paths to rods 7 & 8 is causing an issue in supplied volume, then it could have done the same thing on a thicker or different oil.
Since you improved the oiling system supply to rods 7 & 8, you will not know for sure if the oil volume supplied to the spun bearings was the root cause - I think it was. But nobody wants to smoke another engine again to prove that.