I lost a good deal of brake pressure and the pedal feels spongy in my 01 GT Mustang. Its stock except for exhaust and has 53K on it. I broght it into the shop at my work and we bled the entire brake system and flushed the fluid but that didnt do much. I dont know if its the master cylinder or what. Any ideas or did anyone have similar problems before? The pads look like they are somewhat new too.