I know this problem has surely been covered in the past, but I couldnít seem to find a solution to the problem. My 345 drips gas on the muffler causing it to smoke pretty heavily for a few minutes after start up. It seems to be dripping from this part. Does this whole thing need to be replaced or is it just the gasket? I also donít see how Iím going to loosen the bolt off from the other side. Itís an extremely tight fit. Thanks.