front brakes not releasing causing the rotors to heat up new calibers on 2003 Chrysler Concorde

new rubber brake lines, new proportioning valves has been installed, what may be causing that

Asked by for the 2003 Chrysler Concorde
Helloooooooooooooooooooooooooooo! could you please post the problem/cause/fix for the brakes not releasing,to help others.thanks
1 more answer
I'm sure by now you have an answer. In the past if I had similar problems it would have been a sticking piston in the calipers. I'm sure with all the work you had done the brake fluid was changed too. Just want to hear the solution.