Thanx this makes sence. I was running 15% and you are right I had to run a little lean to get power I think this is why I burned out my first 2 v-6's my v-7 broke the rod but I did not take the cylinder off to see why. When I first got my 110 I was running norvel 25% fuel and had NO trouble. The cost of the fuel made me buy the 15% omega. I have since stocked up on norvel again so I am ready when my new v-7 gets here.. Alan