Hi Erwin G
I bought a 2012 model last year ( no 70 )
I had the same problem and was told they all do that, you need a new hub. Then I looked at the price of a hub !!!!!
After sitting down and giving the problem a lot of thought and measuring, I came up with a relatively simple spacer that solved it for good.
A Saturday spent working on it and job done, this was last year and I fitted a Supermax sprocket at the same time. Total cost a piece of Alloy bar and my time. The belt runs exactly on the sprocket now.
PM me if you want pictures and details.
Ian
Did the same as the belt was running 5mm off the sprocket so fitted a 5mm spacer between the sprocket and the hub. Job done!
