We have a grizzly insert and we are trying to figure out if something is wrong with our damper rod. We don't know what it is supposed to be doing. Is it supposed to be connected to something? When we insert it in the "tube" it goes through and comes out the other end but it's not hitting or touching anything. We recently puchased a new cat and really want it to work but don't know how to engage it. Help from someone with this insert would be greatly appreciated!