You haven't missed anything. Scene Three - which shows David moving through the ship alone - is one best, and most consequential of the movie - which is precisely why I've left it untouched, and I see no reason to lay it out with images. If you care to read the scene, the full (re)Bound script is posted here, it begins with line 23 and ends at line 40. Or better yet, track down a copy of the movie (00:09:30 - 00:11:53), the scene is not just brilliant, it provides the key to David's deportment, if not his motivation: "The trick, William Potter, is not minding that it hurts."
Meanwhile the changes I made to Scene Four are relatively minor, changed some interactions that rubbed me wrong, but made one meaningful change. I shifted film's liturgical calendar backward from Christmastide to Eastertide; death and resurrection rather than virgin birth.