4.11 and Engine Overheat

[EZ1]

I tried both a P40B and P40M and found that they are now very, very sensitive to overheating. I could barely run the engine at 60% and still had to back down several times. This is at low levels in nice thick air. I opened the radiator to max with no effect.

In prior releases I could run these planes at 90% or more forever without a problem.

It's pretty are to dogfight at 60% power.