2006 Dodge Grand Caravan SXT Braking Noises

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Complete 4-wheel brake job, outer tie rod ends, lower control arm assembly, 4 new tires with 2 times tire balancing and 2 times 4-wheel alignment didn't fix this problem. Very subtle, rhythmic friction/grabbing when braking that is progressively more noticeable at slower speeds as vehicle slows to stop. This seems to be originating at frond end. I can detect very faint, elusive slight rhythmic noise at higher speeds, but location for this symptom is difficult to pinpoint.