To improve the aircraft's aerodynamic performance and increase control surface movement

Here’s a quick tip for building pneumatic models: when an airplane is in flight, the wings lift slightly due to the lift generated by the wings. If you can replicate this, the model will look much more realistic. Additionally, if the control surfaces can move in response to pitch and roll, it will greatly enhance the model’s realism. The attached image shows the 748 in flight, but since the wings retain their ground-based shape, it looks quite unrealistic.