If anything simply edit the image, if there is any empty transparent space on the sides then shift the image right so the left side of the image (which is transparent) serves as your spacer - it won't be pixel perfect but sure does beat trying to sort all areas of the css and some of this is shared css so messing w/ the default css definition does not always yield the desired appearance on eone page versus the others. A
plugin like I'm about to do an article on would though.