So my project arrived fully disassembled and I am now installing the door vent windows. The 2 adjustable screws allow me to move and adjust the vent but I don't seem to have any hardware that locks the adjustable screws in place (nor do I find any reference to this in parts catalogs). Should there be flanged nuts holding those in place to the door? Can someone provide a pictures of the vent window installed with the hardware, even the section at the front of the door where the vent meets the paneling. thx