Angle sensor issues

90% of the time these issues are caused by grass build up underneath the safety covers.  To clean them, you need to remove the plastic blade discs (3 allen keys per disc), then remove the 4 allen keys on the safety guard cover itself.  Any grass build up under there can cause the whole deck to be at an angle and upset its adjustments.  It should be very easy to clear out once the covers are removed.  Note, do not clean the underside of the robot with water while the safety guards are removed as they hold the gaskets in place.