Yesterday my brakes went straight to the floor when i went to go out in the morning, still work but only at the very end. I had a mechanic fit an extended brake line in the rear last week. He bled the brakes but i've found fluid leaking from the reservoir, like it was overfilled, it's stopped now at 3/4 in the reservoir. I'm guessing i just need to bleed the brakes again maybe air got in the lines, or maybe brake booster gone? Just no pressure at all until its almost at the firewall.