Thanks for the comments guys. I was burning up the streets off and on today because I'm off to work tomorrow for another month. I need to re-jet the center carb though, it does burn rich from idle to midrange and goes through a lot of fuel. I'm at 3500 feet here in Calgary. Any idea what size main jets I should try? I have no idea what's in there now. Original 6-pack set up with vacuum end carbs.