^^ this one. You will ned to adjust it by removing the linkage and then screwing the pivot point either in or out (that is why it has a locking nut on it, from memory it is in but watch the video. This will then give you the additional movement...
Recently while off roading I realised my diff lock wasn't engaging. On further inspection we found that the Link Assembly Transfer Box Diff Lock was missing.
Having replaced this with a new part it seems I am unable to get the lever far enough...