Inside the brake rotors (rear) there's a small drum brake system. They can be viewed by removing rotor. Visually confirm that there is still brake material attached to the steel shoe, and adjust them as necessary. You may have to dis-assemble adjuster assy., wire brush the threads, and I would lube it up with some Neverseize compound. (you can get away w/ any grease you have).
thank you very much for the infro, will give a shot.
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