Colorado - Nice thought - no kids. hudr- There's an idea - I replaced the muffler and stack this summer, and when I did, I took off the 90 degree elbow from the exhaust manifold, to make sure I got the right size muffler at NAPA. The gasket looked good, so I just bolted it back up. Guess I should have used some hi-temp silicone gasket sealer, didn't think it was that critical. I suppose rain could drip off the side of the hood to there. Seems like a long shot, but an easy place to start. Hard to believe much water could get in there, though.