Hello Gentlemen,

It appears that my initial assessment of the flight model for the Red Stearman was not correct.

As manufactured, the Stearman 75 only had TWO Ailerons on the four wing tips and was known for a very leisurely roll rate.
Modern Stearman, especially airshow birds typically have been refitted with FOUR Ailerons and have a much faster roll rate.
Now keep in mind that in appearance, the Red Stearman DOES have FOUR Ailerons or at least has the appearance of four Ailerons.

Apparently one model of the Stearman 75 was equipped with a 450 HP Pratt & Whitney Engine and that is actually a pretty good amount of power for aeroplane that probably doesn't weigh over about 3500 pounds loaded and that would explain a pretty high rate of acceleration on the runway.
The Textures do show a 450 and a Pratt & Whitney symbol.....

The Yellow Stearman has a much nicer roll rate but behaves much worse from a handling standpoint.

- Ivan.