Yes, the GPS and IMU need to be pointed forward. Your Rx channels need to be set up with throttle to T, Aileron to A, Rudder to R, Elevator to E, Gear to U and Aux 2 to X2 and Aux 3 to X3. The monitor lead from the PMU needs to go in the X1 slot. F1 and F2 are for the gimbal servos and...