From sdk-wiki
Arms are "pulling" while in Zero-G mode
If your robot's arms are "pulling" while in Zero-G mode, it is likely time for a calibration routine to be performed.
- See the Arm Calibration page for detailed instructions on calibrating the arm properly.
If after calibrating the arms, you are still experiencing unexpected arm behavior, please pull your export logs and contact us at RSDK.Support@rethinkrobotics.com