Comment 7 for bug 895821

Ah yeah, that helped X)

Seems to work just fine, as far as I can tell :)
It properly "upgrades" the turret on a per-passenger basis (ignoring size), and likewise downgrades when unloading them.

Don't know if there are any other aspects about this that need testing, if not, this can be considered resolved I guess (though a confirmation from some other tester(s) wouldn't hurt).