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JP, a fair enough point. I thought about that but then considered that I'd rather be sure of the correct bearing clearance vs. the flow of oil from the right case half to the left. The factory didn't use any sleeves in the case to ensure uninterrupted flow across the bearing webs, nor did they use sealant on the webs, so perhaps they didn't consider this to be a problem. Consider also that when squeeze-out occurs there will be uncured 574 inside the oil passage. The main bearings are fed from the right case half which means that the oil doesn't have to cross the gap to feed them or the squirters in the right half. I am using an SC oil pump with the oil bypass modification so I'm confident flow will be adequate.

Of course I'm not saying this is the only approach, what this forum is all about is the informed exchange of ideas about issues that confront us as we rebuild our engines. Ultimately I'm sure it won't make much of a difference either way, but it is a good discussion to have.