On the build screen there is a button on the left hand side near the save and load buttons. It looks like three circles over a triangle. This will show you center of lift, center of mass, and thrust. You want to make sure your center of mass (the red circle) is in front of your center of the lift (the blue circle) currently your center of mass is behind your center of lift. This is why your aircraft won't turn. What you want to do in this situation is ADD dead weight to the front of the aircraft until the red circle is in front of the blue circle. Play with these measurements and you will become really great at building planes that fly well. Very best regards Zaineman :)

Looks 10/10 Turning 5/10 Speed 10/10 . It a beautiful aircraft but it needs to bank tighter to get through the canyons of Wright Airport. Don't forget you have 2 more entries ! Z ;)