Using spitfire for a week and all of a sudden I cannot take off.  The plane pulls to the left and the right wing dips and crashes me into the runway.  Do not have on auto rudder and have tried increasing throttle gradual, while holding back pressure on the yoke to keep tail wheel down.  I am using 75 or 80 percent realism, even putting realism down to 50% has not helped. Don't know what happened as the first week of missions, did not have a problem taking off, just all of a sudden, can,t get airborne.  Very frustrating, have even uninstalled and reinstalled with the same results.  Any help to let me know what I am doing wrong will be appreciated.  Thank you all.  Tom Q.

Put autorudder on. It will solve the problem for you instantly. Either that or turn off num lock and use the 1 and 3 keys to keep the plane on the straight. Or use rudder pedals if you have those or use the twist function on your joystick if it has it. I say use autorudder. It save's an awful lot of bother.

Practice. If you haven't done so already then I would strongly suggest autorudder. It does it all for you.

What I do is nose down a little bit with full throtle, then if It turns on me one way, I turn my rudder the other.  I rarely have an issue using this technique.