I did a little more reading last night, about the M770 rear hub failures. Some guys over in England suspect that the very early M770s had a weakness, which was solved somewhere along the way. A lot of people have no issues whatsoever, so theirs were "probably" made later. But who knows exactly when they solved the problem?
If I were just riding close to home on it, I wouldn't even really worry about it. But out touring, I don't think I'd want to gamble on it. 🤔😉