Hello Ian.
The place is a Hut in the Odenwald, built around 1911, by the "Wandervoegel" a very early outdoor group from before the war.
As per my comments of the shockcords, I can now differentiate them.
The outer surface of theOEM cords doesnt let the center toggle get hold properly. Its possible, with very little force, to pull them through. Subsequently, they loosened a bit during the night.
I replaced them with (stronger=harder to pull) shockcords as used in tent poles and re-arranged the lashing to my needs:
The orange ones are short and connect the two loops at the short ends with a carabiner in between. My main hold for the underblanket.
The original sewn-in black ones in the middle are only to regulate the pressure of the UB against the Hammock when I lay in, they have nearly no tension on them.
Along the long sides I put separate cords between the edge´s straps to regulate, if needed,
the tension along the sides.
These cords I use are 3-4mm thick and show a higher elasticity then the ones provided by Snugpak. Nothing really important, but I have access to all kinds of stuff at the shop and liked to tinker a bit with various items. And by direct comparison the Snugpak ones dont show as much elasticity as mine.
I never regretted the purchase in any way!
Still, I cant wait to get my quilt and then use both in the woods