I have a 1940 EL, and noticed that the engine would miss (as best I could tell, only one cylinder), and have gone through the points and plugs and tested the coil. All seem to be fine. In checking things out, I noticed that the exhaust pipe from the front head felt a little loose at the exhaust port, and wondered if that could be causing a miss. Can anyone tell me if that could be the culprit? If so, any suggestions on tighter fit? How about using some sort of gasket sealer around the exhaust pipe? I'm a little leary about doing that with it being so close to the chamber. The exhaust pipe seems to fit up into the exhaust port about 3/8", but has a little wiggle.

Thanks.