I purchased a new Craftsman Briggs and Stratton from an outlet other than Sears(305cc, 13.5/27 OHV, 6spds frwd and 2 rev. but there was no model # sticker on the snowblower. The manufacturing date is 09/08.Does anyone know how I could go about finding a model # for the blower? I have the serial # and the engine # is 20M114.