Maya Blendshape Issues: Mesh Flipped between Left and Right

PandaCurry18

Hello, I have been struggling with this blendshape issue. The mesh I blendshaped is flipping between left and right.

• The blendshape input is already under the skincluster
• The mesh is not freeze transformed
• The scale is 1,1,1
• Other mesh I tried to blendshape is doing alright (example: the eyeballs), only this one is flipping.

Anyone have any idea? Thank you so much for the help! 

suspectlogic

if you comfortable with sharing your file it will be helpful in exploring the issue. otherwise answering some questions could help. What is the intended behavior ? what does the target look like? is the goal for eyes to rotate or are they supposed to change shape?