Oh man, Steering problem

In-line steering gear (as I remember - it has been a while) you can centre the valve assembly. Leave the two or three bolts that hold the valve housing snug, but not tight. Use a small dead-blow hammer to gently tap the valve housing forward or rearward until the steering stops self-turning in either direction. We used to do this on the hoist with the wheels off the ground because you need to ensure the valve is perfectly centred or else it will cause a pull in one direction or the other. Best as my memory serves me, this was the procedure. I'll double check on this tomorrow for you (if no one else steps up with a more certain answer...?).