Whenever I copy and paste a part of a photo in Preview I can't make it wider without it also getting longer, and vice versa. Very frustrating. I tried everything I could think of. To put it more clearly, if I copy and past a 10x10 pixel square and try to stretch it into a 10x15 rectangle, it's impossible -- it will only grow like so as I drag my mouse: 11x11 pixels, 12x12 pixels, 13x13 pixels, 14x14 pixels, 15x15 pixels ... You get the idea. I can't unlock it. Anyone know the solution?