I just got a Retina Macbook Pro and put Final Cut Pro X on it. I opened one of my old Final Cut Pro X projects to test it with. I cannot for the life of me figure out how to change the Viewer's size to show the footage at full resolution (1080p). I can change the Viewer's size by dragging the window but I would just be guessing at the size. How do I get it to show full resolution? Is there a button or setting for that?