FSX-MS FSX slew mode help

[frangiasnick 2]

hello my friends. i am a user of FSX flight simulator. I tried slew mode on my airplane while parked on gate to get to the runway at which i would depart , and after stopping slew mode , i realised that my airplane couldnot gostraight. It veered to the left . i realised that it was a callibration problem because the airplane was steering left even having the stick straight.  I only use my pc keyboard and mouce. nothing else or external control device (joystick , pedals ) . why does this happen? it did not happen in the past . 

Edited April 23, 2019 by frangiasnick

[Jim Young 2,356]

Turn off turbulence in weather settings

[bobbyjack 61]

I think it is really worth spending a few bucks on a joy stick. And I'm too cheap to buy addons or anything. I run default FSX with a few repaints. My Logitech cost less than $40. Just a thought.