Second photo shows the modified version on the spool next to the original version.
The original includes parametric files for remixing, so you can always start from the original, but I'm including the remix files too.
The author remixed this model.
The original isn't compatible with Creality's CFS because the rims are too wide. I made the outer wall 0.6mm (3x 0.20mm layers) and removed the 1mm inner edge while maintaining the angled edge that helps it hold onto the rim. I tested this on a spool of Elegoo Rapid PLA+. It is weaker than the original, but does help the carboard spool edge remain straight.