I thought the new Centa was metal safe. In that if there were no rubber rods, the inner and outer halves could rotate around each other without any metal hitting.

If that's the case, if the rubber rods are being digested by the Centa, you should have no clanking or metal noise. In the case of the old Harley compensator going bad, it was ALL metal to metal, as that was the design with steel ramps etc.

Also if you lose one rubber rod completely, it has to throw the driveline out of balance. The more you lose the worse the vibration should be. Maybe there's just so much weight flinging around that the light weight of the rubber rods does not add up to much of a vibration. But when you consider when they balance the rotor on the motor, they drill very small holes in it, maybe only 1mm deep, you would guess that a rubber rod would be a significant balance issue.

I wish you all good luck with your Centas.

Dan