look no further than in the Article section...
Geoff (ghsmith45) has written a great article step by step...and he describes
the best stars for each step of the refinement.
http://www.iceinspace.com.au/63-405-0-0-1-0.html
Another good one by Al Sheehan using K3's Drift Explorer capability
http://www.iceinspace.com.au/63-544-0-0-1-0.html
This is the method I use to refine bumps due to kids/dogs/soil movement
in my permanent setup
Further to this I long ago setup a laser on the GEM Pier which shines on
an X on the wall of my house. More about it in this post:
http://www.iceinspace.com.au/forum/showpost.php?p=416432
Steve