Too tight 30mm total up and down when on centre stand also I use wd 40 chain oil lube done 16000mls no prob with anything,Yes definitely lubed and applied quite a bit to it using WURTH HIGH PERFORMANCE DRY CHAIN LUBE. I am also using a tool to make sure the chain is aligned & tightened according to the manual.
According to the manual, the chain needs to be adjusted to 5/15mm slack whilst on the central stand - which seems to be quite tight.