I turned up a curved cone around which to form an intake under the front leading edge of the wing tips. I will use this to duct cooling air to the landing lights. I had planned to tap into this tube for the fuel vent as well, but I would be concerned the flow may act like a venturi rather than to pressurise the tank ... and I don't want fuel fumes directed at the landing light !! Next I'll reinforce the tube on the inside to match some small diameter SCAT.