Hood hinge on 68 dart seems stuck open

The pins that hold the hinges to cowl/firewall have a push on retainer that likes to work itself out which loosens the hinges. I put small worm gear hose clamps on the pins so that the hinge stays in place. Not sure if the will help, but can't hurt. They probably need to be be properly lubricated too, everything, the springs, and all pivot points.