Brake Chatter Issues on the Specialized Tri Cross

my Specialized Tri-Cross is not currently in working order
one issue was BRAKE CHATTER!

my brother Marc send me some links to some resolves

a PDF explaining the proper adjustment of the cable hanger
http://cdn.specialized.com

then this gizmo from Specialized
www.specialized.com

a Tektro version of the same gizmo
www.amazon.com