going back to manual disc brakes from power

Hey guys. I finally got a chance to install the Dr. Diff 15/16" 2 bolt master today and I'm wondering what the normal brake pedal height is for manual disc/drum brakes. With the power brakes, I could pivot on my heel back and forth from brake to gas and now I have to slide my foot back to not catch the side of the brake pedal. I'm guessing the brake pedal is about a 1/2" higher now. I used the original non-adjustable manual pushrod from the factory 4-wheel drum master. I, of course, had to back off the brake light switch and there is still room for it to move back more so it may just be that manual brakes have a slightly higher pedal than power and I just need to get used to it.