The strut applies a strong pressure to only the aft portion of the door. This creates a force similar to pressing on the forward portion of the lower door backwards as it is being closed. The hinge pins flex a 1/2 degree or so allowing a slight angle to the door. this angle moves the bottom of the door aft, as I mentioned. I suspect this is why van's put a bevel on the door edges, to allow them to ride up in this interference. However, if you go with MC seals and more squared door edges, I believe this is an issue that will result in chipped paint. My door edges were definately rubbing in the lower portion of the door until I worked with the delrin blocks to control it. Now the two blocks bring the door into alignment just before it closes fully.
Not sure if this issue is unique to me or not. My hinges are well adjusted, as without the strut I have a clean and true door movement.
Larry