Front calipers extremely tight

[Vicinity]

I went to test out my car now that I finished the suspension, but the car required a bit of effort to move. I put it up on the lift and come to find out my brakes work, but the calipers are holding down tight on the wheels. It's the front wheels only, the rears are fine. I can turn the wheels by hand, but it's pretty hard, I almost have to put my weight on the wheel to get it to slip. I've bled the system 4-5 times since putting the brakes on, but I honestly never really paid attention. Once the bleeders are cracked and shoot some fluid out, the calipers release all tension.

I've come to 2 conclusions, the flex lines collapsed on the inside, or the pistons I bought (used) are worthless. Am I correct in this assumption?



I'm weighing out just buying a new set of C5 calipers and braided lines from Kore3.