Will post the photos when available, probably in the fall.
Another interesting detail, see below:
The rear cruck needed to be spread at the peak in order to meet and support the purlins without using spurs. Since the blades didn't meet at the peak (like the front pair) they were joined by a saddle, a horizontal piece that the tops of the blades tenoned into. There was some discussion whether to call this piece a yoke or a saddle, with the conclusion (still debateable?) that a yoke ties the top of the crucks together (like a collar) but the blades continue up to the apex, or supports a ridge, and a saddle "rides" on top of the terminated crucks: