Hey everyone!
Recently I watched an anime movie named The Princess and the Pilot, which featured a plane designated "kyushu j7w1 shinden"

I tried recreating to the best of my abilities, but unfortunately while in flight, my design pitches it's nose up around 200 MPH and begins to roll uncontrollably on the pitch axis. I tried weighting down the nose, and the Center of mass is almost on point of the center of lift too.