It appears that X Theme is serving up the Revolution Slider twice which is producing this message in GTMetrix. This is the page I tested: http://dev.corridorcompany.com
Serve resources from a consistent URL
http://myzone.mvtoalm8.maxcdn-edge.com/wp-content/plugins/revslider/public/assets/js/jquery.themepunch.tools.min.js?rev=5.4.5.2
http://myzone.mvtoalm8.maxcdn-edge.com/wp-content/plugins/revslider/public/assets/js/jquery.themepunch.tools.min.js?ver=5.4.5.2
The following resources have identical contents, but are served from different URLs. Serve these resources from a consistent URL to save 1 request(s) and 63.4KiB.
http://myzone.mvtoalm8.maxcdn-edge.com/wp-content/plugins/revslider/public/assets/js/jquery.themepunch.revolution.min.js?rev=5.4.5.2
http://myzone.mvtoalm8.maxcdn-edge.com/wp-content/plugins/revslider/public/assets/js/jquery.themepunch.revolution.min.js?ver=5.4.5.2
