Bill, Dave, Cliff, thanks for your reactions.
@ Dave......yes I am working on the tired power plant as well......I eat my vegetables and cycle to the train every day on my way to work
A quick update.
My bike came with a non-original fork; the top was too "elegant" compared to the BSA style and the sheet metal "washers" were missing, near the axle.
Bill Miller helped with a series of pictures of his bike and along with measurements from another BSA survivor I was able to modify the fork to look like the BSA one.