Hate to say it, but...fly a Spit (aaaaggghh!) Like we need another Spit in the arena
But it IS the most forgiving plane. You should be able to basically turn fairly sharply against any other plane and not fall out of the sky. If you STILL fall out of the sky, then either a) you DO suck, or b) your stick isn't set up right.
Make sure your stick is calibrated properly in Windows, and in the game. Adjust your joystick sensitivity sliders down at the left side of the curves, so that initial pull doesn't give you full control deflection. Then try adjusting the dampeners up a bit to make sure your stick isn't spiking.
If that doesn't work, either your joystick is just too twitchy for the game, or you're really hamfisting the plane too much. Try pulling only 3Gs or less while flying. Pull off your target any time you're pulling over 3G and climb. (Just do that until you start to get a feel for how hard you're pulling). If you're constantly pulling 5 or 6 G, and you're flying the 190, you're gonna snap roll a lot.
--jedi