The pin tends to wear and also the hole it rides in to a lesser extent.. they sell $8 rebuild kits that include 4 bushings and 2 pins per side (for both hinges) stock don't have bushings (at least on my older mopar) so you pull the pin, drill out one side of the hinge, put in the bushes and hammer the pin back in.. Literally a 10 min job if nothing else is wrong.