sliders

A few of my air vent sliders arent working correctly. On a couple of the vents when I move the slider a couple of the directional bars dont move at all, as if they have detached from the slider itself. Is this an easy fix? Do I have to remove them to fix this and if so I do how do I do this? I...

Hi all, My CLK W208 air vent sliders on the passenger side and the left one of the centre vents are broken/snapped off. Can these be replaced as it is very annoying having missing bits on the car. I'm hoping they can be replaced without having to replace the whole vent! Thanks