This build is stock, mostly to figure out how it all goes together. I think I will make another one incorporating some changes, mostly in the wings. The internal bits need to be recessed, the flaps need to be resized, the flap actuators need fine tuning, the leading edge internal structure is not accurate, the leading edge slats aren't correct, the landing gear attachment needs reinforcement, and the entire underside is too dark and needs detailing. Other than that, this is a great model. The designer took a lot of time detailing the flaps and slats, something I haven't seen before in airline models. His use of photo-realistic textures is another innovation. And then he made the whole thing free, allowing others to share in his creation.