"Chris. I've already soldered them but i doubt i can returned them and getting them improved. Is there any ways you can help? thanks"

"Hi guys, i've bought the Ardupilot main board, (no gps)
1 Ardupilot Sensor Board - 6DOF (Main)
2 Ardupilot Sensor Board - 6DOF (daughter)

Is there a different source code given in the manual, as the connections are different?"