If Nikon, say, gave you a "new" camera, I wonder what the chances are the one they gave you would not be a refurbed one, adjusted by them in the same way as they adjust those sent in for repair. That, of couerse, may, or may not, be just fine if they have the problem solved from a repar point of view!
When words become unclear, I shall focus with photographs. When images become inadequate, I shall be content with silence. - Ansel Adams