Magic force pusing my bomber sideways

[Dores]

This happened to me today, and has not happened before. Need someone to explain!

I made a mission in the FMB, with a fully loaded JU88 which I was going to bomb some Brits with. Fine enough, CEM and all that on, anthromorphic control off. When I've fired up both my engines and warmed them up a little, I push both to max throttle, same prop pitch, radiator settings and so on, but my plane is pushed off the runway to the left no matter what I do! Full rudder is not enough, and not even slightly powering down engine #2 helps. I know that the propellers tend to drag the aircraft to the side, but this is way beyond that. And it's keeping me from taking off, because I'm constantly crashing into some village outside the airfield.

What am I doing wrong?