Featured Content Images not centered

This problem isn't present on the free version of this theme but once I upgraded to the Pro version the four featured content images are not centered on the page anymore. They are noticeably left of center. I've tried all layouts and there is no difference. I've even tried resetting server to fresh state, reinstalling WP and installing Adventurous Pro as the only theme (instead of having several others that I had installed to preview) and there is no difference. If I select three featured content images, the problem goes away. Three featured content images will be centered but not four. Thanks for the help!