Ok, fair enough. Let's stipulate that it was not a service-related problem. What about some kind of event that both bikes experienced together? Not sure what that might be. Water crossing early in the trip? Don't these drives have a vent that might let water in? I'm just guessing here. Oddly enough, on a trip some years ago when I was still touring on a GSXR1100, both I and one of the other guys on the trip suffered failed ignition switches. It was bizarre.