Hi all, I'm upgrading my Ironman FY690s Hexacopter, with a set on retractable landing gear. I can't seem to get it to work. My Autopilot is running APM 2.8 it flies well, but the landing gear is a new addition. I have a Radiolink AT10 Tx paired to a Radiolink R10D Rx. I have the Transmitter set to control the landing gear on Radio #7 which I've configured to be switch E, but when I connect to mission planner and flip switch E the little bar for channel 7, doesn't move at all. RC channel 6 is connected to VrA (the first knob on my TX) and it changes when I turn the knob, but I don't have the option to set landing gear to channel 6. So basically channel 7 and 8 do nothing when I flip their corresponding switches and channel 6 is useless at the moment. This also makes it impossible to Autotune the copter. I don't know if they're deactivated or if 2.8 doesn't support them. Please help.