Does your state have "winter blend" and "summer blend" gasoline? I live in California, I filled the Connie with gasoline from the nearby convenience store and I had seen the generic tanker truck delivering gasoline the day before. I drove 20 miles to San Francisco and left the bike parked 6 hours. I cranked the Connie and got one pop, then no start. After two hours, I had the bike towed home for $100. It sat for a week, after adding Techron to the tank I set up a manometer to observe fuel levels in the float bowl. I could get the engine to start and as I reved it up, I could see the level gasoline in the manometer drop until the bike clearly ran out of gas and stopped. In my opinion, the neoprene float bowl needle valves swelled up, initially completely starving all four cylinders.