Were Your kids in back ?were they under shoulder strap or in car seat? Did their shoulder strap hold them? Ever hit anyone and got damage to front where the shoulder strap would of had to of kept their face front hitting seat in front of them? You could get on a hill slam on your brakes and test a pendilum mechanism. Ill bet ALOT of money caravan wont at 35mph. Ours didn't. We bought it NEW it was a 2001 but they are all the same in Daimerchrysler Front catches back wont when you jerk. And the whole explanation of Oh its pendilum is heavier in back than in front don't seem legit to me. If its the same kind it still should catch but maybe with a harder jerk.