My steering valve has a slight leak. Already replaced O-rings on all five lines. Didn't help so I'm going to put a seal kit in valve. The manual says to remove radiator and step plate first. I don't see why. Looks like after you have all five lines out of it all you have to do is remove the socket head bolt in the center and pull it down and out. Anyone here ever remove a steering valve from a 425, 445, or 455 ?