Helicopter tilts toward the tail

When ever I start up my helicopter it tilts toward the tail UNTIL I go into mouselook and adjust it(which is how it drives). The problem here is that it does not look right that the helicopter tilts toward the tail, do I have to rebuild the helicopter, or is there a vehicle param that I missed that will fix it?
edit:
just in case it helps heres the vehicle params that I have set

llSetVehicleType(VEHICLE_TYPE_AIRPLANE);
    // linear friction
    llSetVehicleVectorParam(VEHICLE_LINEAR_FRICTION_TIMESCALE, <1.0, 1.0, 0.5>);
    
    // uniform angular friction
    llSetVehicleFloatParam(VEHICLE_ANGULAR_FRICTION_TIMESCALE, 10.0);
    
    // linear motor
    llSetVehicleVectorParam(VEHICLE_LINEAR_MOTOR_DIRECTION, <0.0, 0.0, 0.0>);
    llSetVehicleVectorParam(VEHICLE_LINEAR_MOTOR_OFFSET, ZERO_VECTOR);
    llSetVehicleFloatParam(VEHICLE_LINEAR_MOTOR_TIMESCALE, 1.5);
    llSetVehicleFloatParam(VEHICLE_LINEAR_MOTOR_DECAY_TIMESCALE, 0.5);
    
    // angular motor
    llSetVehicleVectorParam(VEHICLE_ANGULAR_MOTOR_DIRECTION, <0.0, 5.0, 0>);
    llSetVehicleFloatParam(VEHICLE_ANGULAR_MOTOR_TIMESCALE, 0.01);
    llSetVehicleFloatParam(VEHICLE_ANGULAR_MOTOR_DECAY_TIMESCALE, 360.0);
    
    // hover
    llSetVehicleFloatParam(VEHICLE_HOVER_HEIGHT, 0.0);
    llSetVehicleFloatParam(VEHICLE_HOVER_EFFICIENCY, 0.0);
    llSetVehicleFloatParam(VEHICLE_HOVER_TIMESCALE, 360.0);
    llSetVehicleFloatParam(VEHICLE_BUOYANCY, 0.98);
    
    // linear deflection
    llSetVehicleFloatParam(VEHICLE_LINEAR_DEFLECTION_EFFICIENCY, 1.0);
    llSetVehicleFloatParam(VEHICLE_LINEAR_DEFLECTION_TIMESCALE, 1.0);
    
    // angular deflection
    llSetVehicleFloatParam(VEHICLE_ANGULAR_DEFLECTION_EFFICIENCY, 0.5);
    llSetVehicleFloatParam(VEHICLE_ANGULAR_DEFLECTION_TIMESCALE, 360.0);
    
    // vertical attractor
    llSetVehicleFloatParam(VEHICLE_VERTICAL_ATTRACTION_EFFICIENCY, 0.5);
    llSetVehicleFloatParam(VEHICLE_VERTICAL_ATTRACTION_TIMESCALE, 1.0);
    
    // banking
    llSetVehicleFloatParam(VEHICLE_BANKING_EFFICIENCY, 1.0);
    llSetVehicleFloatParam(VEHICLE_BANKING_MIX, 0.0);
    llSetVehicleFloatParam(VEHICLE_BANKING_TIMESCALE, 5.0); //360
    
    // default rotation of local frame
    llSetVehicleRotationParam(VEHICLE_REFERENCE_FRAME, base_reference_frame);
    
    // removed vehicle flags
    llRemoveVehicleFlags(-1);
    
    // set vehicle flags
    llSetVehicleFlags(VEHICLE_FLAG_LIMIT_ROLL_ONLY | VEHICLE_FLAG_MOUSELOOK_STEER | VEHICLE_FLAG_CAMERA_DECOUPLE