You can make the tiny hole I mentioned if you carefully file an old style beer can opener to a fine point and press only until you hear something. As I said, I hold a junk shop cloth around the thing down there and turn my head away from it. Fortunately I haven't had the sort of bad luck Kevin had (sorry Kevin), but it could happen I suppose. Just be careful, please. I give everyone here credit for having a healthy dose of common sense and some here are pretty well educated to boot. Really interesting and impressive group.