Wondering what most of you run in your fuel for the ethenal problem. I have used Star-Tron in every tank of gas for the past 6 yrs, yet dispite my efforts I still ended up with clogged fuel injectors! Having them cleaned now & should be back on the water soon, but don't really know what to use from now on. Any suggestions? I was told by my mechanic that Yamaha suggest using Ring Free. Anyone ever used this & if so what kind of results did you have? Thanks for any input.