Hi you're right this skin was created to be used at the bottom of the video (bottom position) when used on the sides of video occurs the following effect the greater the amount of icons on the dock smaller the icon will and vice versa
I believe you want the skin right in the center of the monitor is it? well ... My advice is that you make a copy of the skin open the 'bg.ini' that is in the folder and keep doing textes with margins. Thanks.
The settings are for screen with resolution '1920x1080' , I use this resolution and functions normally but you can make some adjustments adjust 'OutsideMarginLeft' and 'OutsideMarginRight' , in 'bg.ini' ,with Notepad.