We were on site 9-12 April. We checked many things. The angle of Stone 8 (capstone) is problematical. It depends on where it is viewed from. From the south the angle is 24 degrees from the horizontal. It is the view of the light on the underside of Stone 8 that has commanded our attention, but what you say about the upper surface is interesting. Quite apart from any astronomical consideration what has astonished us this trip is the remains of 'carvings' that we think(!) are discernible. I can't remember where in Lockyer I found his 'alignment', but he thought the quoit is aligned on a Feb sunrise - May sunset line and we think he might have been right, but I emphasise that searching for alignments here belongs mainly to the past; it is the solar usage that concerns us at the moment, not least the capstone aperture through which the sun can be directly observed. I was doing this today with the sun just past the meridian. Thrilling.
Something is not right. This message is just to keep things from messing up down the road