Annd I just screwed up.
Nothing affecting the kit itself, but I was gonna pencil in the gridlines on the top of the saucer... and for ease of lightblocking glued in the A-B deck part and only NOW, after getting the upper saucer lightblocked, did I realize what I did.
GAAAAHHHHH!!!
Well, guess I'll have to rely on Trekworks' theory that at this scale the gridlines would be basically invisible anyhow.
Still sucks. 