Insert for Grovemade Blackwing pencil holder

I love the pencil holder from grovemade for the blacking pencils. In my case, however, they seem to stand on the tip on the inside of the cork protector that is supposed to protect the desk from scratches. I am therefore afraid that over time the cork will be damaged by the pencil tips and that the pencils tips will simply break off in the holder from time to time.

Mit Hilfe des Einsatzes werden die Bleistifte nun gehalten und die Spitze kommt nicht mehr auf den Boden.

I printed everything in PETG (0.4 mm nozzle and 0.2 mm layer heigth) just in case.