My brakes have been mushy since buying the car, so I finally got around to replacing the fluid. I used one of those air assist vacuum bleeder last night and keep getting TONS of air bubbles when bleeding. The manual states not to pump the brake pedal because it will fill the line with air so I just attached the sucker and cracked the bleed valve. I made sure the resivoir was full at all times. Am I doing something wrong?? The brakes still feel mushy but the car stops OK.