took almost days designing engines are modded and will catch spped of sound easyly anyways, To take off Trim full down group 2 activated and throttle up to 16% after reaching 1000 feet activate group 1 and trim full up, after reaching speed 250 you no longer need group 2 so deactivate.Landing will require trim full down vtol in middle group 1 deactiveated group 2 activated with throttle 13% and its tough to land enjoy my hard work good luck! (vtol up down will change wing posture) trim will activate deactivate landing legs and within activation of landing legs airbreakes will get activated too in order to lower aircraft speed and help verticallanding and take off as the real x Wing in star wars can do vertical landing and take off only as this modle does