Brian, the last time I expressed this opinion I got laughed out of the place, but I'm sticking to it. Out-of-adjustment hydraulic brakes DO NOT cause a vehicle to pull to one side or another. It's a physical impossibility for any brake to produce any stopping effect until all the brake shoes (or disc pads) are in contact with the drums/rotors. If 3 sets of shoes are in contact with the drums, and one set is out of adjustment, the pedal continues to go down, displacing fluid, until the last set of shoes contacts the drum. Then, and ONLY then, will any stopping effect happen, because that's when pressure begins to rise in the lines. Poorly-adjusted brakes cause a low pedal, not a pull. If a wheel cylinder sticks, or a flex line clogs, or there is any other way for pressure to rise before all the brakes are touching the drums/rotors, all bets are off!
OK, I've got my steel pot and flak jacket on- - - -somebody disagree, but you'd better have your physics right!
Jerry