hi, its pretty easy to centralise the steerig wheel. assuming you have had the tracking set correctly. do the following. drive the vehicle in a straight line for about 50 meters. if the steering wheel is off centre to the left then the drag link needs to be lengthend, and likewise if the steering is of to the right then the drag link needs to be shortend, rotate the draglink half a turn at a time and recheck untill the steering wheel is central.