1) Rebuild your hinge pins if you can when the door is off. 2) The job is 15,000 times worse if you have front fenders on. 3) Your door striker may need an extra washer to make it mate up with your latch in the door 4) Allignment is almost opposite of what you may think to do. Case and point: If you are working on your driver door, and the bottom right corner near the lower rocker is too far away from the body, unbolt the top hinge on the door, not on the unibody, and move the top left corner of the door OUT. 5) Finally once the door is mostly in place and closing and latching correctly, you can use brute force to tweak the last bit of the allignment. Dont be afraid to grab the top and bottom of the door and rotate it (top in, bottom out, or whatever) to get that last 1/8 inch correctly alligned. They did it in the factory.