Re: How Should Power Drums Pedal Feel?
I'm not sure what you mean by "a lot" of pedal travel before the brakes engage, but the fact you describe it that way tells me you have too much pedal travel. Look in the AIM, it might tell you how much pedal travel there should be.
If it were me, I would start with making sure the rear brakes are properly adjusted. There is a small slot in the back of the brake backing plate that the brake spoon fits into. It's been a while since I've done it, but I think that if you spin the star-wheel downward, it pushes the shoes further away from the center and closer to the inside of the brake drum. Do this with the rear wheels off the ground and while spinning the wheel that you're adjusting. There should be some drag of the rear shoes on the drum. Not a lot of drag. Not so much drag that the wheel is hard to turn, but just enough that you can hear it and feel it. If it's too tight, use a screwdriver to lift the e-brake adjustment lever and spin the star-wheel the opposite direction. You can do all of this with the wheels on the car.
As Kevin stated, driving in reverse and braking will do the same thing. But it is slower.