I have no idea if this helps Norm, but I've just been out and looked at Thumper's front forks.. he's a 2005 Indian built and no mods have been made to the front end, so I reckon this is factory installation.. they appear to be the same as the ones in that picture.
Looks like the forks go up through the top and bottom yolk and the big screws are set just behind the pilot lights and slightly offset towards the handle grips.. I'm a bit reluctant to tear it all down but thought that this description might help..
Here's a picture of the top end, you can see the bolt under the cables to the left..

I didn't buy the bike to add years to my remaining life. I bought it to add life to my remaining years.
Exile.
Find me (and Thumper) here:
http://thumperdiaries.exilesplace.dk/#home