Nick,
A bottom view of the spinner on the wheel. I used a butterfly bit to create a flat spot on the bottom of the wheel and before you drill completely through the wheel, I made another flat spot on the top side, but only large enough for a spacer to raise the spinner high enough to clear the rim.
The hardest part of the install is getting the rubber cover of and then back on. After much trial and error, I found nearly boiling water soften the rubber enought to remove it from the new spinner. I cut/grind off the mounting hardware and use my own carriage bolt. I also recommend popping off one of the bearings and placing the proper length spacer between the bearings so that they are not overloaded when you torque up the assembly. Heating the rubber again allows it to be reinstalled and low seating on a heat gun helps srink the material back up tight.
John /forums/images/graemlins/grin.gif