Endless released an "upgrade kit" for the Endless Phantom retractable pens to fix several issues people had with them. $7.50 USD and you get $7.50 USD in store credit, plus free shipping. They have good ink and paper, so I'll end up using the credit eventually.
Mine are still behaving OK but I'm always up for ways to further improve the seal. Having spare gaskets, repair tools, and a "free" fude nib unit is a nice bonus.
This was also buried at the end of the Kickstarted update:
>>> PPS: If you have access to a 3D printer we are happy to share the .stl files for the Gasket Ring, Converter Collar, Gasket Insertion Tool & Clip Removal Tool so that you can 3D print these yourselves.
I'll go with the metal versions in the kit, but I'm still curious about the files. Could print the parts in different colors 🤔
Questions or comments? Contact me on Mastodon