Here is a link to a much simpler tool for centering the knuckle if you have access to a lathe. The factory SST can be a bear to work with.
http://www.pirate4x4.com/forum/showthread.php?t=734345All of you that say 1 thick 1 thin shims on the bottom is not always true. The bottom shims are how the knuckle is centered but not all knuckles measure the same from flat to flat. I have six different knuckles laying around and not one of them measure the same flat to flat. One of the best things that you can get for the front end is Marlins "Super Seals". They are made so in case your knuckle is not complety centered they will still seal.
why do i feel like i'm talking to a wall
![Spank Butt :spankbutt:](https://board.marlincrawler.com/Smileys/marlin/spankbutt.gif)
Not nice!!!!!!!