Weber rain hat question

[Lyndon302]

I'm fitting my new PMO rain hats on my 68.
Am I seeing this correct. The oil tank breather just vents to fresh dirty air on the lip. Surely this needs to be on the clean air side of the filter. I live in a dry and fairly dusty environment.
Lyndon

[Jack Stands]

Or you can vent it through an oil catch can. However, I think they meant the opening to attach a breather hose from the oil tank.

[lsf911]

I used a catch can on my 68

[Lyndon302]

I think that's the go