Mine was just as you described, I adjusted as egg said and replaced all of the ball jts and tie rods. I thought man this thing should be tight as hell since all were worn and one of the inner tie rods was real bad.  Unfortunately not 

  .   I saw on TV where you shouldn't do the adjustment on your steering box with pressure on it.   In other words disconnect the center linkage from the pitman.  I was able to take more of the slack out that way.  Mine is still not what I would call good but it's no longer a quarter turn as you described.  Be careful though I've also heard that if you over tighted the gears in the box you will do more damage in the long run.