SOLVED!....sort of. Where's there's spark.. there's no fire!

The mechanical advance flyweights are NOT part of the distributor shaft. They are attached with pins and springs to arc with centrifugal force.

If this is a School Learning exercise I promise to be patient.

Meanwhile back at the brothel...

Look into the possibility of purchasing a "High Alkyd" distributor cap, and rotor. Jacobs or similar ilk 10mm secondary wire set. With the price of fuel being the next best thing to a torture chamber, saving fifty to a hundred gallons per year makes sense.