Buddypress Community Featured Image Thumbnail Problem

I've recently upgraded my theme (afsachapters.com), the site converted fine, but now when I publish articles the featured section on the homepage only grabs a thumbnail of my image and doesn't fill up the entire section.

I've checked all the permissions, reset the theme, poked around with the settings and still cannot get the featured images to maximize... they just stay as thumbnails. If anyone has any slick ideas for me to try I'm all for it.

Thanks again for your support!