Made the ears thicker so you can use M3 x 12 screws, adjusted rail (made slide rail shorter at top), so you can add or remove mounts or cord holder without removing screws.
Use “supports to bed only” to print.
Cam mount here:
https://www.printables.com/model/384092-c930e-web-cam-mount
other parts for cam mount here:
https://www.printables.com/model/161704-prusabox-enclosure-horizontal-mount-for-logitech-c
The author remixed this model.