Yeah, thanks for that M.
It has crossed my mind too and I've had a bit of a look but Iother than bit of wear it all looks ok. I have just ordered a new chain and sprockets from OTR. Hopefully that will fix it. Do you know these guys? They have just about anything you can think off for any of the 660s. And they are super efficient. Last year I ordered pipes and and few other bit and it took all of 6 days from ordering to delivery.
Cheers
Matt