I've only seen mine but I'm convinced the staffs must vary in length. Perhaps different batches? Mine doesn't go all the way but I can tell that there wouldn't be room in the staff head to go much further. Also the hand can be moved up and down the staff and depending on how you angle the staff this could also help to bring the hand and head nearer.
I adjusted mine for ages but have now settled on a position and have stopped before I break something!
I adjusted mine for ages but have now settled on a position and have stopped before I break something!