[Oneredspyder]

I would start taking the car for a short ride and see if it pulls one way or the other when you brake, and coast to see if the wheel drags. Bleed the front brakes and look at the flex line, is it new, does it flex? I have flex lines look fine on the outside and rot on the inside to the point where the master can push fluid to the caliper when you put your foot down. The release of the calipers is a passive thing, and they will not return to their non braking position if the flex line is old and their inside diameter has shrunk from rotting. A slight curve or kink in the flex line will prevent the caliper Pistons from releasing, keep pressure in the system and make the pedal hard.
Just My experience.
I just replaced all the flex lines on my car with SS from Pelican. The rear ones had a ID of 2mm. They were all way to stiff and probably original to the car.
86 Carrara, 86,000 mi.