Inliners International Forums General Discussion Engines Interesting 261 Story

I haven't started this engine up yet, and I'm a little worried that the rotating assembly might be out of balance--I didn't have it balanced at the machine shop. Does anybody know whether that is likely? I mean, to my way of thinking this engine must have been warrentied for some reason--I am hoping it was just low oil pressure from the cracked fitting on the pump-to-block oil line. But how likely is it that an unbalanced engine got through the building & inspection process back in 1960. Anybody know? Am I just worrying for nothing? Ideally I would just start it up and see how it runs, but I can't do that for about 4-5 more months.