Hello, @jk1 . . . I have moved your new topic to this thread for issues with the home station.
Lack of light and too much shadow can cause this issue as well as the sensor at the bottom of his chin which might need to be wiped off with a soft cloth. The other thing it could be is an issue with his leg wires/servos.
If this is the case, I refer you to this page to see if these tips help and if not, there are instructions on how to contact Support there.