I have replaced both rotors on the rear, the actuators ,the shoes,all of the parking brake cables.i did notice that one of the replacement cables for the rear is about a inch+ longer than the other one where it connects to the intermediate cable with the bracket.the parking brake pedal was still going to the floor.so I tried re installing The factory intermediate cable with the adjustable thread/nut .I had to end up installing about a 1" of washers to take some slack out.it is not going all the way to the floor now but close.it still won't hold the vehicle still on a boat ramp.im not for sure what else todo .the only thing I could find on a online search is that i read somewhere that someone had a similar problem with aftermarket brake shoes.they ended up having to go with acdelco shoes to solve it