Try our re-instated info resource - "Aladdin's Cave" (Main menu)- sorry it's taken so long to fix
Undo the locking screw on the outside, remove the fork piece on the inside and the complete mechanism comes out from the inside
Tight is the one, there is a generic for 6mm bolts but thats in the book and mine aint here
I’d go for 3-5 ftlb in the absence of other info…..just saying.
Modern manuals say 6.5ftlbs for a 6mm screw and 7ftlbs for a flanged 6mm bolt.