Brake Issues

Hey guys,
As the title states, I'm having issues with my brakes. It's got 4 wheels power drums with a single bowl master cylinder. I personally don't have a problem with how they work, but my dad doesn't like it one bit.

Basically the problem is, there seems to be a bit too much travel in the brake pedal before the brakes start to grab. I've been driving the car for nearly a year now, andhave become used to it, but any time my dad drives it he complains and says I need to fix it.

Basically I'm wondering if there's a way to adjust the travel in the brake pedal, or whether or not you guys think I should try re-adjusting the brakes. I know they're self-adjusting, but from what I hear that mechanism is pretty much junk anyway.

What do you guys think? If any more info is needed to help with your diagnosis, please, ask!

Thanks guys.

What do you mean by bleeding past the seals? We've bled it several times, but it's been probly 4 months since the last time we did. Might try it again.

Ya, the peddle really isnt spongey, and when it catches it brakes fine. It never gets hard then easy, like it would if I had air in the lines. It just effortlessly goes half or so of the way through it's travel path, then the brakes finally catch. I've got probly 3 inches of travel where it does nothing, then another 2 inches where all of my stopping power comes.

Oh he's definately used to newer braking systems. I drive the stang daily, and he drives a 97" chebby truck. I'm used to mine, and can't hardly drive his or my moms car without taking it around the block first.

What do you mean by a later model drum/drum master cylinder? Like, a 4 wheel drum dual bowl m/c? Could I pick one of those up from my local auto parts store or am I gunna have to order through a resto site, and would the improvement be worth the cost?

Thanks man!