Thanks for the quick answer, hmm but then the featured image in the grind view and on other parts of the site get cropped too.. i think i rather adding a new image under the post title/meta within the blogs contents instead.

Another problem i’m experiencing with the theme is that shortcodes of my plugin are showing in the excerpts, i used to mask them by using Advanced Excerpt plugin that filters out the shortcodes but it seems not compatible with the theme? is there another way to filter/strip these shortcodes from the excerpts?

example: http://www.inorge.nl/reisverslagen/