I'm not a supporter of ethanol fuel but we have had it in our area for about 10 years now. In fact we haven't had a choice for about 10 years. I don't have any fuel related issues at all. I actually think I have less fuel related problems now than I did before. Varnished up carbs use to be the norm but not anymore. The ethanol does a very nice job of keeping the fuel system clean. I think ethanol tends to be the normal excuse for any carb/fuel related problems. Is it really ethanol fuel related though?? I have plenty of examples of dried up rubber components prior to ethanol fuel. Is it possible that these rubber components are coming from China and being made with inferior materials?? Just a thought.