I was wondering if it is possible to change the world size in Marble for the coordinate system. I have created a custom map of a world slightly bigger than earth in QGIS but if I put the image on marble and then import the rivers, locations and routes as json files everything is off due to the extents being bigger than earth in QGIS.

I figured since you can make it smaller for the moon it could be enlarged for a custom planet but I can't find information in the documentation.