Hi Courtney - you need to attach the cage to the object - Cage by itself does not do this, it only creates a cage object. Use CageEdit > BoundingBox etc etc to both create and attach the cage. If I were you I think I would make a simpler cage however - you probably only want degree 1 and two points in the CPlane X direction.
Mansfield Camel’s Hump his and hers rings_PGCage.3dm (1.2 MB)
-Pascal