1964 Evinrude 9.5HP 9422S motor. Was running before sitting in my basement for the last 9-10 years. Tried to start in a barrel, runs 3-4 sec and dies. Ordered carb kit, carburetor soaked in acetone for 3 hours, air compressor blow. Couldn't replace the needle seat (the one in the kit has a bad thread) so I kept the old needle and seat since they looked good. New float, gasket, .... Tried to start, same 3-4 seconds. I cleaned the spark plugs, tried idle needle setting from 1/2 backup all the way to 2 1/2...same 3-4 seconds. Starts, revs-up and dies. Tried with cover on initially, cover off after I read that running in the barrel may deprive motor of oxygen from the exhaust. Any help pointing to the right solution will be greatly appreciated. Thank you.