-6an too small for a breather tank?

[formula]

Hey guys,

I just bought a set of Mike Norris' breather tanks for my car, gonna run one for PCV and the other I was hoping to use as a breather tank for the engine. I've got Wegner valve covers, and in talking with them I've become concerned that the -6an lines on the Norris tank might be small enough to exacerbate oil losses from the valve cover into the tank by increasing the velocity of the air out of the valve covers.

Are my concerns at all legitimate?