Ok, can anybody help me understand what I am doing wrong? I bought a Gatorback belt and am trying to install it, but I can't get the tension pulley to budge? Is there some screw or bolt that has to be loosened first, or is that pulley supposed to be free moving? Tried pushing it down with my hand, no go. Tried using a 14mm ratchet and extension, no go. Maybe I just a girly-man?