Thanks hogleg! And i'm glad you wrote that last statement under the pic because you really need to clean that cap! lol I can see why you really need that o-ring! It's a pretty good idea, but wouldnt it affect airflow or cooling? That's why those holes are in the cap? I'm not sure, but at least now I see how abv is getting in. It's fine if I clean it, and once every few months I think i'll open 'er up and clean properly.