I have a problem where it twitches then its fine for like 30 seconds then does it again.
I have changed a stiff motor and esc but still has a problem
Here is a link to it doing it. http://youtu.be/KL6a-KkR3JU
Me not sure what to tell you then .I would redo an advanced imu cal and be sure it was level and see if that helped .
I have seen mine act like that on occasion with low sats but not that many .
I won't hurt !! Might not help but not sure what else to tell ya . Maybe some more will see this !