Adjust Viewport Locations When Going to Full Screen

I have an NGUI interface on one camera and another camera to display my character object (in perspective view). When the game is in windowed mode, the view port for the character camera is set to a specific position on the screen. I use the SetResolution with the current width and height, to go full screen. The NGUI correctly goes to the height and keeps the aspect ratio (leaving blank space on either side of the screen). I want the character camera to also squish in toward the center of the screen (with the NGUI), but remains at the same screen position that it was before we went full screen. So, it appears that the character is outside the frame.

I've tried doing the math to calculate the amount of space between the side of the screen and the edge of the NGUI and then just adjust the view port rect (x variable) to accommodate the displacement, but that only works for some cameras (with specific x,y coords and width/heights), but not all of them.

I've tried looking up with problem, but no one else seems to have it, so I'm sure I'm missing something obvious. This is for stand alone builds.

Does anyone else have this problem? Or does anyone have a solution that works for all scene cameras (non-NGUI)?