nate, thanks again for trying for me with that bike.
now to your question.
park the bike on a flat surface, make sure that all four tires have the correct air pressure.
if so, then set your handle bars in the center position. you should be able to see if your front tires are toed in or out.
If so, then remove the front tires, you will see the steering arms that come from your steering head to your spindles. you can just loosen the out sidde jam nut on the ball joint, remove the ball joint from the spindle, then you can turn the joint in or out to get the tires even.
If that is not the problem, then check your wheel bearings, this can also cause a pull if they are bad, they will affect your camber and caster angles.
Hope this helps, if I get a chance latter, I will try to get a pic of the parts if you still need it.