This weekend I finished my scratch built Fokker Eindecker and flew it. It is a little squirrely in flight, but not uncontrollable. I think if I add just 1 ounce of weight to the nose it will be tamed. The pilot is a 1/6th scale Williams Brother's figure. The motor is a Tower Pro 2908-10 with a APC 11x4.7 prop.
Here is the build thread>
https://www.rcgroups.com/forums/showthread.php?t=796167