Jon--We may be lucky here in Colorado Springs, most gas stations have real gasoline, some have 10% deathanol. Do the YF diaphragm problems occur even at 10%? I guess nobody makes a replacement YF diaphram of a deathanol-resistant material? Not a big enough market? One last question: Is it fair to say that the later model W-1's are a close second to the YF??? Thanks again.