[Zero10]

Mine's had that noise on deceleration since I bought it. 40,000km's later, it hasn't changed significantly. If it's bearings, it will only get louder, and eventually you might experience some kind of transmission failure, I'm not sure exactly what would happen if the bearings ground right out.

Tifo, good to know that I can shim the R&P to help prevent the dreaded failure.
I had always considered it, and in the back of my head, I thought the nature of the failure was an incorrect free play adjustment, due to wear. Nice to have somebody confirm that.

Perhaps over the winter, I will be replacing my syncro's. Do most places that carry the syncro's carry the shims for the R&P?