I think I put a little bead of Yamabond (or something else that never hardens around the edge). I have a Dyna ignition, so I hopefully won't be opening it for years and I'm not as scared of getting a bit of water in there like I would be if I had points, but I still felt it's worthwhile to seal it with something. At some point, I'll probably trace and exacto a proper paper gasket to fit in there.