thanks for the confirmation.....would find it hard to believe there was not one. Was down at the boat today and did a double check....no gasket anywhere that I can see. Makes me wonder if that's where a lot of the blackish stains are from in the back of that area. Never noticed any smoke in the few years we've had it. Be chatting with the parts folks tomorrow and see if they have enough sense to figure out the part #. Always something with them.