| Thanks Norm & NBs.
I had a feeling the sticker & handbook didn't agree. I have noticed this on other Ducati models as well. I had thought my chain was OK until I checked it according to the handbook & only approx. 25mm from chain shoe but that probably equates to 35mm from under side of swingarm.
I hadn't realized the sprocket recall was due to poor chain tension I had assumed poor quality manufacture or a design problem. I have had my sprocket checked once but have had another recall letter for the sprocket so is this another problem? | 
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