You have to use two shackles on the halyard - the light, stabilizing one for the slide and the main shackle between the halyard and headboard.
Kufuneka usebenzise amatyathanga umabini kwiintambo zokunyusa -- ekhaphukhaphu, le izinzisayo yeslaydi netyathanga elikhulu phakathi kwehulyardi nebhodi yentloko.