Bambu Lab A1 mini upgrade

Hi tutti,
The Bambu Lab A1 mini is a amazing and almost perfect printer.
Almost only.
For example, filament often escapes from new (i.e. full) spools and gets stuck, which stops the printing in progress.
Here is my solution to fix this little problem.
I wanted something that was one piece, easy to print and easy to install, without disassembling anything on the printer.
And not too ugly if possible.
It's done, I hope so.
As a precaution, it's better to put a little double-sided tape between the thing and the printer mast.
You will also need a pneumatic fitting to hold the PTFE tube (you probably have one lying around somewhere).
Finally, you have to reverse the direction of rotation of the spool, the filament now passing through the rear and no longer through the front (that's the trick).
Happy printing!

Hello tutti,
La Bambu Lab A1 mini est une imprimante épatante et presque parfaite.
Presque seulement.
Par exemple, le filament s'échappe souvent des bobines neuves (do