Change width off the gallery

Hi,
When I use the “tiled-gallery-carousel”-gallery it has only a width of 620px, so there would be space for the sidebar widgets.
But I don’t wont to use the sidebar so my articles use the full ~900px.
Is there a way to tell the gallery to use the full width of the container?

Any help would be greatly appreciated!

Cheers Sammy

http://ww.wp.xz.cn/plugins/tiled-gallery-carousel-without-jetpack/