I got thembdown at 12 the other night but that's what usually go down to. What's the lowest I can take them? I was thinking about 8 but I have no idea.
And what's the easiest way to get them centered up? Just time and patience or is there a method to it?
8 should't be a problem. I have always just lined them up best I could when tightening them down. No real trick to it, you may find that tightening in an alternating pattern will help. Let the rotation do the work after that.
You'll find the best pressure for you before too long.