I have a turret model I have imported into unity. This turret model comes in two basic parts, the nest and the guns. The nest needs to rotate around a point I’ll call pivot1, and the guns need to rotate around pivot2. In my 3d app things are working ok, everything is doing what it is supposed to. But when I try to get things working in unity I cant get the pivot points back. What I think is happening is Unity is averaging the pivot Vector3 of the parent and all its children, resulting in a weird, off axis pivot point. Is thre any way to make the pivot point of a parent object STAY the pivot point of the parent and not go off and averege itself?? Quite annoying when working with multiple pivot points… 
You can switch the pivot point from center to the pivot point defined in your 3d app…
This is from the documentation:
http://unity3d.com/support/documentation/Manual/Learning%20the%20Interface.html
Thanks, didn’t notice that. 