My pictures are no longer centered in the preview screen. This happened after the most recent major upgrade to the user interface. When the customer first enters the item listing in my shop the picture is fine. But after about a second the image size is increased and the right hand side of the pic is chopped off. I rendered all my pic at 1280 by 720 resolution and every thing was fine until about a month ago. I have over 400 pictures uploaded to my shop....... do I really have to regenerate them and re upload them? What resolution is best to use with this most recent shop version?