Center thumbnails after changing stage width

[jimdavis]

I need to fit both columns of thumbnails in a div with a width of 355px. I changed the width of the stage to 175px but can't figure out how to center the thumbnails in the new width. How do I reposition the thumbnails to center on the new stage width?
Jim

[jimdavis]

Figured it out. Just had to unlock the element.