UPDATE.
FINALLY.
Due to the nature of the door, the load had to be pre-released. But no bother, job well done.
And that payload was the re-establishment of progress...
Centauro packs quite a volumetric punch!
All that from one smallish shuttle...
Wow... no seriously: 370m of custom foundation laid, and only 12m to go!
That's a lot of Shuttles!
Excaliber enters the scene.
It delivered the last 12m. And the base for the elevator shaft. Thing 2's got work to do!