Which 7/8 master cylinder?

Sorry, just saw this. Still makes no sense. How can the brake rod to the pedal be too long? What is keeping the pedal from just moving further out? It should swing freely. If it is bottoming out on the brake lamp switch that is wrong. People keep doing that and don't understand. It isn't rocket science. If the switch is at max adjustment and still stops the pedal, then the rod is too long. Of course, you also would like the pedal to sit at a certain height, like same place as the throttle pedal.