Elfa Utility Door & Wall Rack Standoff

I absolutely love The Container Store's Elfa utility door rack system (https://www.containerstore.com/s/elfa/components/elfa-utility-door-wall-rack-components/white-elfa-utility-door-wall-rack-system-components/123d?productId=10009292) . It's perfect for the ultimate spice rack so you don't have to go digging through cabinets. One thing that always bothered me though was the rocking back and forth when I closed the door, in the 4+ years since I've had this setup it hasn't caused any mechanical i