After playing around with this plugin for a bit I've gotten it working almost perfectly. However there's one issue that will prevent be from using it. I'm unable to have the thumbnails default to the featured thumbnail for each post in the gallery. I can grab the first image, the last image, or setup a string search through my image names -- but this all results in images being used that are undesirable. I just want to use the featured image I've set for some 450+ posts. Is this possible with the current version of the plugin?