USB connection stability: Suggestion for the 3D-printed case

[GitHubMad]

When inserted in a USB connector, U2F-zero can move vertically, as the PCB is somehow thiner that the space in the plug. It results in some bad electrical contacts when we push the button.

We printed this file.
But it didn't solve this issue.
I glued some thick paper under the male USB connector, and it is much more stable.

I suggest the 3D file could add a thin plastic layer under the connector.
We couldn't prototype this idea, as we use OpenSCAD that doesn't open your source file format.