And I would agree with the torque and P-factor EXCEPT, when the the British requested to try the Lightning, they required the engines to use the same gear box on both sides and, due to US regulations, were not equipped with turbochargers. This was different than the USAAF planes that used two different gearboxes to counter rotate the props. While the USAAF planes were well mannered, the British versions were not. The RAF returned their planes to the US who quickly changed the gearbox and prop on one side and added the turbochargers, matching the the other planes used by the American pilots later, after the US joined the war effort