That doesn’t appear to be the problem. For example this post http://www.thecatholicmuse.com/2013/10/28/photo-of-the-day-2/ the image is 2008×3011
And it isn’t working properly. I had to post it as a standard post instead of a gallery post, otherwise it posted with no image on the home post. But if you clicked on the link to the post then the image was there. I like using gallery because it collapses the post and forces the reader to click to continue reading. I would send you the link to the photo but when I go to grab it it says it can’t find it.
The current post is a gallery post, but the set feature is not appearing. Instead the theme us grabbing an image from within the post. http://www.thecatholicmuse.com/2013/11/06/walking-with-grace-wednesdays-3/
The image I wanted to use http://www.thecatholicmuse.com/2013/11/06/walking-with-grace-wednesdays-3/img_1377-72dpi/#main
The image it is using http://www.thecatholicmuse.com/2013/11/06/walking-with-grace-wednesdays-3/img_1352-72dpi/#main
Same exact size.
Marylea