Hi guys,
I have the same problem with my eccentric hub being grinded by the rear sprocket.
The problem i have is that the hub was so wrecked that that the circlip that holds the bearing became loose (unfortunately not locking the rear wheel).
I checked at Ducati and a new eccentric hub is ~1000 EUR so a little to much over my budget.
I was thinking of inventing a system to hold the bearing in place there.
What solutions do i have?