Correct, if it need be done.
They do, but, the problem is people not setting the system up right for the car. In general, MoPar says to have the snubber approx. 1/2 inch from the floor. This measurement is a starting point that "In General" works best for the masses of people. Somewhere around the net, some body made a snubber that was extremely adjustable, unlike the MP unit. The snubber was set up on a screw and jamb nut locked it down. You could set it up in increments as small as a 1/32 difference. Even less maybe.