This problem has been happening g for a year since I got the Jeep. The front driver brake caliper wont release once it gets hot but will release when it cools down. I have replaced the pads, rotors, flex lines with stainless lines, calipers , freshly lu fixated everything that needs it, and there is a new used axle in the front , with all those changes the problem still is happening and it happens every time the brake heats up now , where it used to only happen every so often. Proportioning valve maybe? I have no clue, I’ve replaced everything that would cause the problem except for the valve, maybe the actual metal line running to the flex tube from the proportioning valve? Anyone with ideas please help, I need my car back because it’s my daily