The thing is, this problem is appearing for me with new bones that are drawn nearly perpendicular or parallel to the ground plane, before ANY modifications have been done to the falloff zones they become asymmetrical.

Create bone 1(several times I actually just drew the bone without moving the endpoints at all)
Create bone 2
Figure -> Symmetry -> Left to Right (or Right to Left)
... At this point the bones appear to be symmetrical...
Enable spherical falloff for one axis on bone 1
Enable spherical falloff for the same axis on bone 2
Figure -> Symmetry -> Left to Right
 ... at this point the falloff zones are no longer symmetrical (two axes show -180 degree rotation).  Nothing has been rotated or moved, how can gimbal lock be causing this?

Out of about 8 tries, I have not been able to get a symmetrical set of falloff zones added onto an existing rig.  I'm gonna do a humanoid rig from scratch and see if this reoccurs with a simple figure.

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