Stephen wrote:
Just trying to hang a door and found that the frame is 9mm wider at the
top than the bottom. Any ideas ?

The frame has come loose and the packers have dropped. Most door
casings are some 1/2" narower than the opening they fit into.

Take the door of and remove the archtraves on one side. Extractt he
packers and refit the frame. You may get away without having to do
anything to the original fixings if you have a clean gap to bang the
leg back into.

You'll need to redrill though or V-nail if you have a timber stud to
fix to.

And you will want a new door.