Squishy Eyeballs

I'm new to Character Animator so this is my first puppet. I've started with the blank.ai file and modified it to what you see above. I'm not sure what went wrong with the eyes but they are normally eliptical and squish and contort when the pupils move. I've tried resetting the eyes and re-rigging them with no success. I've also changed them from elipses to circles and that doesn't fix the issue. Do you have any suggestions for what to try next?
(I tried to post the AI file but keep getting the error "The contents of the attachment doesn't match its file type.)
