Ok,I keep having the brake light on the dash come on off and on. Sometimes it's fine the next time the pedal is spongy and the light comes on. Then it will get better again. I turned the rotors put new pads on and a new master cylinder. I have bled the heck out of the lines and there seems to be NO air left in them. The lines and rear drum wheel cylinders seem to be in good shape also. What gives? I don't want to rear end somebody, please help!