Don't know if this helps but, I used a s&s shorty E on my '46.
.0295 / .072main
Used some old manifold (don't remember whose) that went from plumbers fittings to 2 bolt carb.
Spaced out the carb to clear the 3.5 gal tanks with stock looking air cleaner.
Used stock twist grip. Replaced stock throttle wire inner with braided cable to work with carb.
Usually gave it one squirt, key off, one kick, key on, slight crack on the throttle and kick.
Started pretty good on fresh engine.
Should have kept that bike😩