Are you pulling the pins? and to know there is bronze bushings in them,grease is not for this application,,a couple of drops of oil,or a spray lube,like Schaeffers Pentro 90,Amsoil general spray,Slick 50 spray,or similar ,also check the door holder arm/cam they also creak and squeek,best to lube a couple of times a year or even every oil change.BL