Just got Elwood running after being parked for a year. The header is on, the carborator back in place, exhaust all welded together. Ran fine adjusted everything. Drove ten miles to get the emission done. Idled great right at 850 rpms. Ran upto 2500 rpms for the test, they let the engine drop back to idle for the third stage of the test. It went to 0 rpm and would not start unless the choke was pulled half way out. Had to pull choke each stop all the way home. Ran strong but rough without the choke. a little hesitant. Any ideas? trying to eliminate electrical or fuel. Any help appreciated.