[Plugin: JJ NextGen JQuery Carousel] spacing between scrolling images

Hi,
I’m trying to add some spacing between images in the scroller. I’ve managed to do this in the css which works when the scroller first loads, but when you scroll to more images, the spacing is not applied?

Any advice on how to maintain the spacing during scrolling?

http://premierepromotionsuk.com/portfolio/sharon-miller2/gallery/gallery/

Many thanks.

http://wordpress.org/extend/plugins/jj-nextgen-jquery-carousel/