Anyone have a Flag mounted to the HD Air Wing Luggage Rack? I have looked at several versions and the "Base" that actually mounts to the rack is always listed as 1/2" but the rack rods are actually 3/8" ... only the outer rails are 1/2" but the pics show the base mounted to the inside rails? Also if anyone has one, could you please tell me the height of the base from it's bottom to the tapered top without any flag in it? Any input is always greatly appreciated. Thanks so much