Hi Guys, thanks for replying to my topic, It's an interesting way for me to solve problems and upgrade my skill level witch I call intermediate.

On my North Star, I haven't install an elevator, I use elevon mixing. Of course, ailerons are a lot bigger to plans and the aircraft performs fast rolls and loops, etc.. with authority. Actually, It flys very well without down thrust except the problem I have notice here in that topic.

I'm not sure I understand well the situation!?!. Anyway, Tall Paul's picture shows well Down Thrust dynamic of the North Star. If I understand well, down trust will force the airplane to fight the engine thrust angle, it will waste some power but may help to keep the nose up when going at full throttle. I don't really like the idea. So guys, what do you think about moving back the CG point (closer to the tail) instead of adding down thrust to the engine? will it solves the problem this way?