Wonder whether the non driving gear needs to be aligned with the sphere. Or does the force push the driving gear into a gear alignment? Or is it done in softwar

Wonder whether the non driving gear needs to be aligned with the sphere. Or does the force push the driving gear into a gear alignment? Or is it done in software. I noticed some jerkiness in some movements. Seems that in some cases gear play is definitely there. Not good for precision. A very cool design though. Makes me want to 3d print it