Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Some good details and specifications there from Graham. Adjustment looks reasonable from arm position, it's just trying to bring maximum lift that can be attained with the lever/cable etc by adjustment to very small gaps in each stage. Lever end free movement is in the manual at 10~25 mm, with that set to minimum @ 10mm it should reach the largest lift space possible on the plates/clutch pack and give the least drag in operation.