NImble Portfolio Featured Image

I’m using the Nimble Portfolio plugin and am struggling with the featured image.

I set a “featured image” and you can see on this page that it shows up as the main image for each portfolio item. Once you click “read more” on a portfolio item however, the featured image is stretched wide across the top of the next page. Ideally, I’d like to have no featured image appear on the “read more” page, if possible.

Any ideas on how to do this or where in the code I can take this bit out?