if you are using Enhanced Faceposer (this addon) https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=148090220
you maybe have the same issues as i am, that was i can't controll any part of the face of sonic, and all was in a one control. which just let me make a comedy expression
if you want to fix it (or at least i fixed for me) use Improved New Faceposer
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1397821926
If I help you with this information, I am glad for it, if not, I am sorry for you and I hope you will find it soon.