Images not strech to fill complete GK image slide show

Hello
I have small problem with gk4 image show, can you please check my problem in my front page http://www.elegancereef.com/ as you can see at the top of the page in gk4 image show, images are not stretched to fill all gk4 position, there is white space at the right side of images, in administration images are set to: stretch but that does not help.
Can you please help me to fix that issue

thank you

Hi,
please go to module settings. Here in Interface section find Image width option and check if you set correct width. Probably width is less than container.