I was looking for something to help with cable management with my CGEM II mount - the original file was the closest thing I could find.  I resized the file to fit the area around the back of the polar scope cover to fit the ring on.  Initial prints were done using 4 layers and 25% infill  with PLA+ filament (the ring on the left was done in matte white, the other in glow in the dark green).  Print time was about 30 minutes on a Kobra 2 Plus.  Would recomment to use PETG or other more rigid material for printing.

I would like to thank simontelescopium for posting his original model.