Symptom: When going in opposite directions the steering is sometimes off by an overlap or a skip.
Cause: Occasionally this is an error caused by the GPS receiver in the automatic mode switching the satellite used for GPS corrections.
Resolution: Satellites used in North America are 135 and 138. You can set the satellite used specifically for corrections by pressing the "Menu" icon, pressing "GPS Settings", pressing "SBAS Settings" and set "SBAS 1, 2 and 3" to 138 or 135. Save your selection, then reboot the terminal.
REBEL: MENU>SETTINGS>GPS SETTINGS>SBAS SETTINGS
MAX: MENU>SETTINGS>GPS SETTINGS>SBAS SETTINGS
STX: GPS BUTTON>SETUP> PRN
S-Lite: MENU>SERVICE MENU> SBAS SATELLITE