I removed some excess material from the original, extended the screw holes so you can use the original fan screws for attachment, and improved print supper by extending the two bars near the filament cutter. This new cover helped dramatically reduce vfa (vertical fine artifacts) resulting in much smoother prints. Just ensure you do a full calibration after install to get the best results.
The author remixed this model.
I removed some excess material from the original, extended the screw holes so you can use the original fan screws for attachment, and improved print support by extending the two bars near the filament cutter.