All power steering boxes have a neutral position so that the fluid doesn't try to push you one direction or the other. It would be correct that if the ps is not in the neutral position that it would push the steering either to the left or right if you let go of the wheel. There should be a small arrow on the edge of the pump at the shaft to indicate the stock neutral position for a properly installed pitman arm.
Interesting, I'll give this another look. Of coarse trail gear doesnt put an alignment mark on there pitman arm (again Marlin needs to sell these)
