Hello, new member. Forgive me if I am posting this incorrectly. I have an 07 Taurus SE with 46,000 miles on it. Mostly Highway. Occasionally the brakes will feel spongy and much less responsive. I inspected the pads and they are well over 60%. I bled the brakes and this did not solve the occasional spongyness. I am not sure if it is the master cylindar or not. Is there a known issue with the master cylindars on these year Taurus'? Thanks!