I've tried using .post-center and .post-center img css handles, and for the life of me cannot figure out how to properly change the image sizes for featured images! :( Anyone?
That won't adjust the image size. The images are resized based on the functions.php file at the very top. add_image_size('gallery-image', 620, 465, false);
Note: If you adjust this, your will need to re-upload your images.
