Hi Spindizzy,
Had a bit of a time understanding your latest jargon about delta.
So studied your photo once more.
Only you know for sure but>
It appears the tangs are as with a non delta hanger.
Delta is attained with the angled hinge?
Stupid question> if you would lay the rotor on a flat surface and
place a 90 deg triangle at the tip L.E. when it is at surface level
Holding that posistion what happens in relation to the triangle
when you cone the blade?
Would expect there is negative incidence, but have you checked? if so how much added negative?
Any other change?
Good show!

Hal