The podcast art is too small — 1,071×1,071 pixels. I need to change it so the proper size of 1,400X 1,4000 to add it to Itunes. However, I've tried changing the images on my end in the profile. Do I need to delete everything and resubmit it with a different Cover Art at the proper size? Or is there an easy way to delete the image and make it the proper size?