I know i've come across a write up on how to fix a sagging door but I can't seem to find it anymore.

The driver side door on my 1995 F250 HD isn't hitting the striker plate anymore and I have to lift the door up a little and close it. Does anyone have or know of a write up/tutorial on how to fix this? I remember reading something about the pin bushing being worn out and that's what causes it. Let me know, Thanks!