I think my 727 is fried. Now I'm at a crossroads...
Okay, had some time to pull the converter. Originally I said it was the snout that was scored, but I misspoke and meant to say it was the hub. Anyway, here are some pics.
You can see there is obvious scoring along the body of the hub, easy to feel with a fingernail. But there's also two cracks I found, indicated by the arrows.
The bushing looked brand new, which I found strange. But I forgot to take pics before putting everything back together.