a possible solution for overheating & low speed spitfire/hurricane in last Beta patch

[JtD]

E-1's were maybe a km/h faster and weighed 35 kg less, giving it marginally better climb. In other words, the differences between an E-1 and E-3/4 were considerably smaller than production tolerance, even if I think that in a computer game a relative 1% difference should be somehow modelled.