You were correct about the ignition module working on a variety of 2 stroke engines.

I then changed the coil from the original, 50 year old one with 9 k ohm resistance to a new one with 5 k ohm resistance; I finally had good spark at the plug.

Tried to fire her up, no go.

Took off air filter, sprayed in some starter fluid(ether), and tried again. BINGO- ran for 2 seconds. Joy oh joy..
Put back the air cleaner and snorkel, tried again, and she’s all good.
Throttle control works, and a lot of smoke follows.
A minute later, clean running no smoke.
Roaring like a train.
God I am pleased. After 12 months, it’s finally going again..
I have pictures too. Will post them also.