Hello Dave,
Attached is the Hulme installation sheet.  I think the jig could be made by someone
with your expertise.  If a 5/16-24 bolt had a point ground on it, the placement of the guide hole
on the jig could be found using a newer machine as a guide. I have one older Star without
the hole drilled/taped and someday I was planing on making the jig.
Just a thought.  Keep up the great work.
Semper Fi
MikeA