Rudder off!

Recently while playing, I've noticed on ALL of my planes, that during takeoff, the all act like the stick is turned to the right. BUT!
Even without the joystick, and using the keypad, the plane still jerks to the right. I got no clue, any help?
Even without the joystick, and using the keypad, the plane still jerks to the right. I got no clue, any help?