I have a 1991 150 faststrike and noticed the rubber gaskets on the sides of the carbs are wavy looking. I took one off and you can tell that they are not sealing (might explain the surging I had the day before I put it up for the winter). I heard someone say that the ethanol will eat up the older style fuel lines but what about the rubber gaskets of that time period? Would they be "rated" for ethanol? Just wondering because I've never had any problems at all until I started running the ethanol gas. I also noticed in the other motor forums that it seems like everyone is having problems with this stuff. Btw, i always use seafoam in every tank. What is the best fuel additive to combat this ethanol?