Door problem

My doors seem to sag a little. There are some scratches on the side moldes because the bottom of the doors are rubbing on them. And you have to slam the door a little for them to shut all the way of lift up a little. I here from some people that it is the door pins. Do any of you know what this is?

Yea worn door pins or the way the hinge is mounted is failing (weld or bolt)

where do you get pins? auto parts store have them?

Just got mine fixed a couple weeks ago. You can get the pins off an e-bay store for like 7 or so bucks, but if you don't know how to take the door off just take it to a repair shop and they can get the bolts and fix it for you. Taking the doors off is a little more involved than just loosen a bolt here and there, if your not confident save yourself a headache and let a shop do it for about $60 a door.