Landing Gear

Hi
I have the Tarot ZYX-M controller and it seams to want too lift the gear right after I power up the controller. I have tried reversing the servo several time is both the Radio and in the tarot software. I'm also having trouble setting up the radio to not go below 10% with the throttle gimbal as too not allow motors to shut down in flight

Radio Devo 12s with Devention of course

Thanks