Unfortunately Mike your photo is a little too far outboard to show them. We need to go a little more inboard and slightly further aft. I've been through my photos and can't yet find one. (Honest CliveJ, it is the truth, they DO exist
So would they be just outboard of the engines and in the Spar 72 region? i.e. where all the elevon loads were going in?
Happy Christmas to all
CliveL