Я так понимаю, что устойчивость по тангажу у него всё-же приличная:
Pitch trim changes with speed are moderate, and the tail plane trim wheel mounted abeam the pilots' left hip is easy to use. For a display, I run it at 420-450kph in trim, and then do not retrim. This causes no excessive stick forces during the display. Overall the aircraft is straightforward to handle in pitch.
А вот чего нет абсолютно-это курсовой устойчивости.