Symptom: Articulated tractor acquires the line poorly and weaves back and forth before finally settling down.
Cause: Antenna pivot measurement may be set to "forward' rather than "back". Default setting is "forward" but, when antenna is mounted on the cab on a 4WD, it needs to be set to "back" when entering the antenna pivot measurement
Resolution: Change measurement to "back" in the vehicle profile settings. User may need re-converge the filters. Check the status of "filters converged" in the status screen of your unit.