Problem: Crown gear does not run smoothly.

Cause: This may be because the horizontal crown gear is resting directly on top of the vertical gear. In other words, the weight of the horizontal crown gear and anything on top of it are being held up by the vertical gear. This is a bad design and it interferes with the meshing of the gears.

Solution: A solution to this problem is to have the horizontal crown gear held in place instead of having it rest on the vertical crown gear.

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