Over the past few months I've been cleaning up the brakes kn my car, powder coating, rotors and and braided brake lines. Now I have a pump bleeder,i bled the brakes with it until I was blue in the face to make sure there were no bubbles. Then i tried the old fashion way by pumping them and I actually some more bubblesdid that for over an hour and STILL nothing. Am I doing something wrong? This is by no means the first time ive done this. anyone have some suggestions