I looked at a number of different filtering options but didn't come up with any I really liked and that looked good. I ended up using RC car fuel filters with a tiny bit of oiled twinair foam in them. I have seen this idea used before. The filters were $3.30 each and are extremely cool billet aluminum, even available in colors. The lego for the holder was free. I didn't filter the floatbowl line since I an sure in my bike history I would have seen dirt entry there countless times before on many bikes. Cam.