ive got a 590 mariner. first time i loaded it the mag spring got twisted and bound up in the tube. i freed it from the front with a rod, and it just bound again when i reloaded it. follower is fine, it slides perfectly. i figured it was just a spring, shit happens. mossberg customer service sent me a new one no questions (after them not replying to an email for over a week, and then waiting on the phone for an hour). new spring, SAME problem! once you get over 5 or 6 shells in it, the spring binds up and wont return. is this a common problem with these things?