did you lube the slides and pins when you put the new pads on? did the pads come with new slides? did you put them on? when you put the slides on did you clean the mount with a wire brush to get rid of any debris on the mount area? if the kit didnt not come with slide are there slides already in place where you put the pads?
Red 2002 f150 7700-4R100 Trans-3.73 gears-Sterling 10.25 rear- 3" P.A. body lift-Torsion crank-35" BFGs-Efan swap-Gotts/Silencer mods-Flowmaster super 44-Edge Evolution-Autometer gauges.