On Section 38 page 165 of the Wing Manual there are both a vertical, and I presume, a horizontal diagram for the 9th bay placement of the stall warning sensor.
If one is to believe the above, this places the vane well above the stagnation point on the leading edge and not in the conventional position on any other light aircraft I have seen.

One would assume that the stall warning vane is centred on the very leading edge of the wing, is that what the diagram depicts?

Can anyone explain the magnified right side diagram labelled 1D3-2?