After looking into this more it looks like your S-Link is correct. I attached a link to the manual. See page 8. The Shock Eye-to-Eye: 241mm (9.5”) should be this.
Yes and I've looked at that particular page of the manual. I had another Demo owner who has serviced his and many others and he says that the shock is needing a rebuild as he and my friend took it apart and found everything to be as it should on the frame while the shock itself is needing the work.
service.specialized.com/collateral/ownersguide/new/assets/pdf/FSR---2011-Demo-FSR-Manual.pdf