Hi,
I didnt quite follow things to a "T" I went to a Northern tool store about 9 miles from here and bought the closest thing I could find, and afte a little modification with the ol' welder it works ok, however I did mount the face of my trailer hub to the BACK of my rotor...not to the inside. While I'm lucky enough to have a lathe to turn it down I elecetd not to do that....thus I didnt have to drill a large hole in my blades/hub to clear the bearing cap.
Only time will tell how it will perform....click on my screen anme and click file you can see the mill setup the way I just described it )
All the best,
Gavin