Dealer told me last season and anecdotal experience has confirmed that the recent model year G4s ('19s and '20s not sure about '18s) are having a relatively higher incidence of secondary roller failures. If you're the wrenching kind, I would replace them before 1,000 miles. Preferably with the high torque version, but that's a personal preference. No personal data to prove they are truly more durable. Failure in the field can be a real bitch. Worst case, you can swap out an entire secondary to ride it out, but that's not a great solution if you're on a trip.