I'm needing an exhaust snout for my Chrysler outboard. I just purchased this motor and the previous owner said it wouldn't idle well w/o fluctuating rpm. Could the lack of this snout contribute to this problem? Does anyone know where I can get the snout and the two bolts and the washer? I was told the part # is a A438118-2, but I'm not absolutely sure since I don't have a parts book. Thanks everyone!