Rc Airplane Scratch Build Heinkle He-51

I like to design and build aircraft that I have not seen built as R/C before. This is a "stand-off" scale Heinkle He-51 . Designed and built Post WWI as a fighter Plane. The plane was noy legal according to the terms of Germany's surrender. It was slow due to there being no aircraft engines in production. Power was provided by BMW engines that were not powerful and were heavy. It did see action in a war in Spain and was quickly relegated to the status of an attack bomber due to a lack of speed for air combat.
The original model pictured was very unstable last pictures are with extend top wing. A great improvement, but ALAS, like almost all R/C planes, may it R.I.P