Head restraints with a single post

I have a 1985xj6 and trying to adjust the head restraints and they won’t budge,any ideas?

Brute force John, they ought to move. Try hitting them with your hand. Get a little bit of oil involved maybe, either it is corrosion or something similar for sure. Best luck,

David

thanx dave,will try it again,ill let you know how I make out