layerslider in corp theme in header

Hello,

I am using a CORP WP theme CORP demo page

and layersliders….

now, the problem is, when I insert a slider in a page body, the slider works fine, but I need to insert a slider to the top of the page, above everything else…. so I inserted the code on header.php, and the slideshow appears, but the transitions is all sloppy and images appear doubled… it looks horrible… is there anything I can do about it??
Thank you in advance