Tight Handbrake

got my 66 Valiant Convt some 3 weeks ago. just yesterday i noticed (discovered) that my handbrake cannot be pulled up, it is so TIGHT. went belowdecks on the dumb dirtyword car and found the Cables are all TIGHT. but...car drives and stops normally. suggestions?? i believe i will have to make close physical contact with either of the two dirtyword rear wheels. or?? stay safe thanks