The foam square which covered the case screw and prevented the drag chain from catching on the screw head came unstuck, and so I thought I would replace it with a cover.
It looks thicker than it actually is and is not much thicker than the original foam covering.
It is a snap fit and is also retained with double sided tape on the flat surface between the cover and the X1 inner housing.
No supports needed.
The author marked this model as their own original creation.