Am in the process of replacing a set of seals and hub cable, and noticed one very small groove in the rub ring on the Axle ring. The fingernail can only just feel it.
This is on the axle side.
On page 115 of the manual it says if there are grooves (the photo shows 2 grooves from the seal) deep enough to feel with the fingernail, to send back to Rohloff for replacement.
Should I bother? That side of the hub never leaked any oil, it was always the cog side.
I have all the bits and replaced the seals and am about to reassemble.