92 Mustnag GT. Hard To Stop. Brakes and/or Aod?

[bevers7748]

I Have A Bone Stock 92 Mustang Gt With An AOD Trans. Im Having A Hard Time Get The Car To Stop Like It Should. I Have Changed The Brake Rotors, Pad, Booster, And Flush New Fluid In The Whole System. I Have Around 15 Vac At The Booster. I Have To Hold The Pedal Down Aways To Keep The Car From Moving.. The Pedal Is Hard To Push. I Can Here The Transmission Downshifting Right When I Come To A Stop. I Was Thinking It Might Be Something In The Trans. I Pulled The VB From The Trans And Clean It. I Found That The Largest Ball In The Vavle Body (Orange One) Was Jam Very Good In The Separtor Plate The Goes Between The Vb And Trans. I Put Everything Back Together With New Gaskets Fitler And Fuild. It Seem To Help Some. I Just Dont Know What To Look At Now. Any Idaes What That Orange Ball Does In The Trans And Why It Got Jamed So Bad? Am I Missing Something In The Brake System I Should Be Looking At?