I know this problem has surely been covered in the past, but I couldn’t 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 don’t see how I’m going to loosen the bolt off from the other side. It’s an extremely tight fit. Thanks.