I got mmy Stargazer yesterday. As I saw a few people complain on the facebook page, my nacelles aren't 100% straight. If you look at it dead on profile from the front they're aren't totally in sync, but from a general viewpoint you can't tell so I don't really mind.
Is everyone else's the same though where you turn it upside down... and you can't even tell.
From the magazine I see it was originally constructed by putting two Constitution saucers together (why it was meant to be so thick) so hence it looks like there's a bridge on the "bottom" of the saucer. But also the bottom has the name and reg of the ship, and in a way that it only reads right if you flip it