Me Again wrote:
Turning the handle when closed is not locking it. The act of turning the handle is to prop it open for coupling, when you back into it correctly it contacts a mechanism that releases it to slide closed under spring tension. If the flange of the king pin does not interfere with the latch mechanism the handle will pop all the way in under spring tension. Putting a pin or padlock in it when in is locking it. I never saw it all the way in, in the early video's.
I guess you didn't go back and watch, and listen to him at 14:55 of the third video . Its apparent he locked it manually . I don't care what its supposed to do , he locked it manual it was in the open position AFTER he backed in . If you listen to what he said, you might not want to keep insisting on what YOU think the hitch is supposed to do .