image not properly resizing only for 27 inch screens

Hello. I have a question regarding possibly editing the responsive nature of the Pexeto Story Theme. The responsiveness of the theme is fantastic on everything below 27 inches screen – but at 27 inches the images in the full-width slider are no longer centering where they do for the other sizes, instead it’s focusing on the top half of the image. Any ideas?

https://www.googleready.com

thank you,
Brett