How change slide background sizes

gk-4-imageshow-resize.jpg

I have a gk4 image show running in boutique template but struggle to get the image/background size changed.
The size and position should line up to the left (see screenshot)

Off course I found image with settings in the module properties at the tab Interface.
But whatever I do (change image size in interface to any value or change the sizes of a slide or both) it just won't change?

http://very-fashion.nl/index.php/nl/

Hi,
Maybe use GK Grid module and using it build your gird and inside insert all modules,
you can also use alternative slideshow module.

If you need customization job use PM, here we can only give tips via support.