Groundhandling

hello, Ive a problem with the default DC3 in fs 2004. It will not turn to the right using the right arrow or joystick. IT GOES left or if I use the left arron It goes right. Same problem with the Vega`s Ive tried to fix it in the internal program for the DC3 but I have no clue..I could use some advice.
:-/Thank you very much
:-/Thank you very much