I just got the Phase II from Enco on sale w/ holders for 89.00 I bored out the stud for my 10mm stud on my 9X20 and it fits really nice. At first it looked large, even on the 9X20, but once mounted its perfect. A really nice change for the better. Running the tap down the center of that bolt was a trip, I was sure it was going to snap, but it didn't and the sleeve set up worked out perfectly.
Halfnutz
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)