Have been lurking here to fix some stuff on 2006 and 2008 2500 HD SLT 4x4's including some dreaded front axle u-joints
Just want to thank all who post DIY's and post with their experiences on here to help others.
In thanks I would like to share a line from an information sheet I got in a steering gear box seal kit (had to replace input shaft seal in the 08')

Disassembly

5. Unscrew the worm shaft from the ball nut, allowing the ***** to fall inside the piston. Remember the ball guide and place the ***** in a cleaning fluid. The design of some worm shafts will not allow the worm shaft to be removed from the ball nut with the ***** in place. To service these units, remove the ball guide clamp, invert the ball nut over a cloth and rotate the shaft in both directions to allow all 27-29 ***** to fall out.

Thanks all!