There is one more area that I thought I should cover, for those fitting new doors:
This is one of the few adjustments you actually make to the door but is not as obvious as others. When fitting a new door, the top front corner (near the top of the quarter light area) is often not close enough to the door aperture. You might not notice it until you hear the wind noise as you drive down the road. To fix it, you have to force that area to sit further in, on its own. To do this, jam the door open with something like the wooden handle of a hammer (preferably with a rubber hammer head), placed at the top rear corner of the door. From inside, grab the curved top front corner of the door and pull it sharply inward. It might even contact the door aperture, but that does not matter. Check the door after each pull (you may have to do many) until you are satisfied it is close enough to enable the seal to work properly. It is better to do this operation without the seal in place and prior to any paintwork.