I woke in the night and thought on the plane a bit and recalled an experience back in the 1970''s when foam airplanes were first introduced by Sure Flight if I recall. I built a Spitfire and gosh it flew well... that is until the fuel tank got low and it turned wicked with an increasingly sensitive elevator and pitch became so unstable that the plane was lost late on its maiden flight.

So, the thoughts about long noses and fuel load leverage on war birds is applicable.