i noticed that the new CAS jets, A 164 and Neophron keep going into a dive if fly slower then 370km/h. it requires constant correcting (pitching up) to keep it more or less in a straight line. For the buzzard this is anything below 270Km/h.
planes like the A 164 (A10) were build to have excellent low-speed maneuverability, so i dont think this is supposed to happen? or at least not untill your under 220 - 230 km/h