Is this the original chain?
Yes -20k miles - I know its getting ready for a new set but the sprockets still look ok to me.
I have just been all round the chain slackened it right off to start and checked each one and there are more stiff ones than I thought - not super stiff but not so loose so that I can bend the links with my fingers if you know what I mean none were that bad but they all feel free now. But I still have a tight spot in the chain, must have an oval rear sprocket.
I did check the alignment with the two lines method a few months back and found the swingarm markings to be correct.
Going out now for a test ride