Europa-List: Fuel vent opening ideas wanted

[rparigor@suffolk.lib.ny.us]

I have fuel tank vent on my XS Monowheel plumbed to the top of the Cobra,
a small space (siphon break) and the vent hose comes out.

Was wondering if I could get input on:

Attempt to cut down clogging (Bug, Ice formation, Debris)
        Thoughts on Reduxing in some stainless wool? (What are negatives)
        Thoughts on crushing vent tube into a oval, in hopes of
                preventing critter ingress and stream lining?

What is favorite location, forward facing? Vertical(90 or 45 degree cut)?

Thx.
Ron Parigoris