I had to do some digging but managed to find one photo of my set up. Note that the brake pedal arm is straight up in the air (vs. the clutch pedal arm).
The final placement of the brake pedal is governed by two things.
1) The piston being held in the forward position by the internal piston spring, and supplemented by the brake lever return spring.
2) The length of the rod coming from the master cylinder, connecting to the brake pedal lever. (Yours appears to be way too long.)
