When printing a 5x7 or a 4x6 picture it always comes out smaller usually a white border at the bottom. I want to get an exact 5x7 or 4x6 print. In the settings I am choosing as my paper size 5x7/13x18cm, photo size is full page . If i try to change the photo size to 5x7 it tells me "photo size doesnt fit on the selected paper". Any suggestions.