The original model is good, I like the shape of the clouds, but it had too narrow a groove for my needs (12 mm), so I remixed it to a larger groove (23 mm).
PS: It could be done easily in a slicer, but I couldn't export it as a simple whole to be able to share it with you. So I had to redo the model (in FreeCAD) and after simplifying the faces, the model could also be exported in .STL and uploaded here for you.
The author remixed this model.