Starting about two months ago the brakes on my 69 began working poorly. It started with me having to press farther and farther on the brake pedal to stop it. After further inspection I realized the master was low on brake fluid. After a couple of drives, it started again. Low master again and looked for leaks. I couldn't find any leaking brake fluid anywhere. Then they stopped working completely, no pedal, but I finally found where its leaking. Inside the car and down the firewall. Every time the brake pedal is pressed brake fluid will run out of the are where the pedal and firewall meet. Is this a malfunctioning master cylinder?