Incidentially, raping the English language makes more than just Zylon cringe. If I hadn't known in advance you thought you were being clever misspelling a word to irritate him (and irritating Zylon is a practice I fully endorse, almost as much as doing same to an admin), I'd probably react similarly to him.
And, ah- you even have to set them in modelview? I'd assume it was for a reason, and that missiles involve some kinda pathing or model generation point or something that primaries don't.
I bet if someone works out a way to have aspect-seeking primaries or something like it, and uses a model with the old style of turrets, it'll crash the game though. Just a hunch.