Have you wiped them down liberally with talcum powder? My new ones are quite tight still, but because of the extra weight in the doors (I lined the inside of the doors with (Focal brand) sound deadening and smothered the door seals in talc, they shut quite easily. I also fitted the seals and adjusted the doors to suit before I painted the ute. I painted it with the doors on rather than off the vehicle. I have found that I did need to leave the doors always closed as the seals took a little while to conform to shape properly.