I'm getting a some rattling with with my empty carrier in receiver so going to try one of these anti-rattle devices. It seems to have good reviews. If it works well enough I may need to paint it black. I know there are lot of these out there but this one seemed quicker to put on & off that some of the other ones.
Hitch-Vise™ Anti-Rattle Clamp
http://www.hitchrider.com/nowobble.htm
Hitch-Vise™ Anti-Rattle Clamp
http://www.hitchrider.com/nowobble.htm