Just a shot in the dark here, but have any modifications been made to the bike involving the electrical system prior to your 600 mi service?
My dealer service tech, told me that a customer had changed to an after market exhaust, which entailed among other things, removing the two (2) servos in the exhaust system. When it came time to remove the limiter the the dealer was unable to accomplish because the computer would not allow it. The cure was to reinstall the OEM system and then the limiter could be removed. Strange, huh. Accordingly, I postponed some of my modifications until after the limiter had been removed.
Just a thought,