well the brakes are working great. new calipers, pads and the worst problem was indeed the flex hoses. Where the flex hose is attached to the control arm is a clamp about 3 inches long and super hard to work with. it had corroded between the clamp and hose and as a result, had reduced the diameter of the hose to the point that i had no pressure at all and thats what had the calipers frozen and rusted. my brakes react and feel like a new truck would now. thanks for all the good advice.