I have a screen door, (or a "storm door") that when it was originally
installed about 15 years ago, sat straight and plumb in the door way.

This screen door is not the single piece type, where the whole thing,
door and frame together, just bolt right on to the outside wall. This
door was installed with the door and the frame all separately. Even
the frame came as long lengths and had to be cut and mitered to fit.

As I mentioned, 15 years ago, it sat straight and plumb. Now, it
seems to be cocked or "off' somehow. There's a section on one side
where it doesn't even meet the door jamb any more.

I can only assume that over the past 15 years, the house , door, or
doorway has shifted, and there's no real way to adjust anything in
this door.

Just wondering if anyone has seen anything like this before, and is
there another move besides replacing the door?

Thanks!