I'm replacing the fuel lines on my 2006 20I. I purchased 3/8 anti siphon valves to replace those too but when I took off all of the fuel lines, I could not find any ASV's. Did this skeeter have those valves on the fuel system? I thought they were required for outboards. Also, all of my lines are 3/8" but all of the fittings they connect to are 1/4". I'm having issues where my new engine is acting like it is running out of gas. I was hoping it was ad ASV's. But I couldn't find those. Any help would be much appreciated.