SB-2 1937 & 1938 is basically impossible to stall, il2 in game notes say this is characteristic of plane. SB-2 1938 & 1940 can be stalled in game, perhaps as they are heavier.
La-5FN is complete terror to German player! as it can UFO turn, All La-5 & 7 have same flight model data
EXCEPT La-5FN which has its own "special" aileron/flap [squares]
As all other La-5 & 7 use same value La-5FN appears to be wrong?
P.S. there is 348 seperate flight models in 4.13.4 il2:1946 already! So it would take a whole year to test and check all game....maybe!