I noticed when down in April there is also a Rap Anchor (double rings) on the high ledge above and opposite Missing Link that can be used to get down to this anchor on Flinders Lane (1 x 60m, is very handy if on The Syrinx etc as it saves having to down climb to the base of Missing Link and then go through the Key way or Ali's to get back to the base of Tiger Wall)
Figure of 9 (re extra twist) seems to solve that and is less likely to fit through a bigger descent device such as an 8.