The complete graph showing the stick forces is even better!
and also:
"The rolling ability of the enemy fighters (Spitfire, Hurricane, Curtiss) at high speeds is worse than that of the Bf 109. Quick changes of the trajectory along the vertical axis cause especially with the Spitfire load changes around the cranial axis, coming from high longitudinal thrust momemtum, and significantly disturb the aiming."
http://kurfurst.org/Tactical_trials/...g_Aug1940.html