I had my 307 installed and it was working until I added gi 260 aoa .,gmu11 and gsu25. This is the order I have them wired.first is the gsu25 with a termination adapter,then gi260,g5,sa28servo,sa28 servo and gmu11 with termination end. I have the 307 wired to first servo via rs232. Now when I arm the auto pilot, my g5 flashes with a red "x" on AP(autopilot light on left bottom of g5). Any help?