Welcome aboard VanFleet and you did OK for your first post here!
It’s a mystery to me why they put these in the tank as the tank is vented via a small copper tube which is a similar design to the Zephyrs of the time. To find that part it’s probably best to place a want ad in the free classified section here. I bought a tank off Ebay once and there should be lots of them out there. Whether it’s needed or not is anyone’s guess and I don’t see why the motor wouldn’t run right if it wasn’t there.
