I have never built an Eagle II kit, but most kits have down and right thrust built Into the firewall. Maybe that is not true of this kit, but at best, down thrust is a compromise. It is designed to make that particular design fly level at about half throttle. At full throttle they climb, That is the nature of flat bottom wings. They provide gobs of lift, and the amount of lift increases at higher throttle settings. How does your plane fly at half throttle?