My wife lost a piece of folded paper down inside one of the vents.... it is now blocking the slide lever that adjust the fan.

How do I remove the vent to get to the paper.

I know that on other cars.... you only need to fully turn the vent in a "upward" direction and... gently pry the vent out.

Anyone know the secret to the vent on a
1989 MB 190e 2.6???

Thanks to all who take time to reply.