Lubricate Loaded Calipers? Brakes dragging intermittently

All new disc brake kit. New MC, booster, hard lines, prop valve, flex hoses, rotors, spindles, upper control arm, brake assemblies. All from a kit from Classic Performance Parts(CPP). I've had the system power bled and it's working well...except the random sticking. I've also emailed CPP to see what they have to say about it.