Adding all the structure to the top. Interesting problem to get the "spine" (long ply piece floating in the formers) aligned with the other side. ended up using 2 ways to ensure alignment. 1) aligned the spine at the same relative position in the formers. That is, matching it with the relative position of the first half. 2) I used a plumb bob to align the top with the bottom. Of course, had to ensure that the fuse is level first for this to work. Regardless, using both of these approaches gave me confidence that it's in the correct location. So I glued it in!
