we use the Pro Version of the Ultimate Responsive Image Slider. So far a very nice Wordpress plugin!

We would like to use images with a fixed height of 520px and variable widths. Unfortunately I can´t figure it out how to do this. I tried different combinations of the "Slider Width"/ "Slider Height" in the Wordpress backend options as well as I overwrote some of the CSS styles. The slider automaticly resize all the images to the same width. Overwriting the styles had also the bad result of gaps with different widths between the images.
I can´t provide a link to the website but I hope you can help me anyway. It´s pretty important for us.
Thanx a lot for your help!
Kind regards,
Torsten