I just measured from center to center of my sit bones and their width is 110 mm. I am looking at a nashbar fr1 saddle which is 135mm wide. So how do I relate my sitbone measurement with the saddle width. Is the width of the saddle measured from the outside edge to the outside edge of the saddle. If the saddle is measured from the outside edges what are the chances that it would be wide enough that it would work for me?