I have a 2001 Concours w/11,000 miles. It has always run perfect until it sat for about 2 months. Now it won\´t run unless enricher is full on, and then it surges like crazy 2000-4000rpm. If I remove the tank and try it then it seems to work ok. Install the tank again and it won\´t run without the enricher. Fuel supply is good, new plugs, had valves checked and carbs synchronized at 10,000. Any ideas before I really dig into it? This is my first Connie and I have loved it until now.... 
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