Luthier plz fix the "stuttering stuka"!

[addman]

Right after take-off it starts shaking for no apparent reason. Rads are open, all temps are fine, no blown engine, all flaps/airbrakes are retracted, supercharger set to manual -as should-. Funny thing is it doesn't shake if you choose to air-start it, only take-offs causes it. It's not the mixture settings either because..there are no mixture settings. I'm planning to make some missions with the stuka but I just can't bare the shaking.