I installed px4 firmare on Pixhack, everything is working perfect only the throttle thing is reverse. I have fuel engine mounted on the plan and a servo is controlling the throttle. I have Throttle channel connected at RC Channel 3. If I move my throttle stick all the way up, servo turn downs the throttle of engine, and if I move the channel all the way down, servo moves the throttle of engine to high RPM. I tried to reverse the PX4 Parameters,
-1, then throttle does not move to any direct, like there is not connection to Servo. Please help me, everything is set up, only this thing is messing with me.