http://parkerguns.org/forums/album.php?albumid=307

Look at picture #13 in Brian's group of pictures. Uou'll see the square hole on the end of the cocking slide, and the crank, up in the front of the action. The crank must fit over the crank, and I don't think it is.

Brian the unhooking slide seems to do as you mentioned. When I push in the pin on the front the slide tip moves also.