@Plumkaboom a helpful tip: if the plane does backflips move the wings back untill it stops flipping and has either a slight climbing motion or a slight diving motion. that way you know that the Center of Lift (CoL) is behind the Center of Mass (CoM) it also helps by pressing the (show center of mass button). its the triangle with the rectangle balancing 3 balls button. looks like a seesaw pressing that will help with anything wrong with the flight characteristics.

@Plumkaboom thanks for the upvote

@Buzzshot I tried, at first it wasn't even possible to fly :D, but i really got your point and i am truly thankful for your comment!

This is a suggestion for your next build. Please don't take this to heart, but this plane is near uncontrollable. Try to make your next build a bit more controlable.

Excactally the kind of planes I made back in the day