Yeah, that's exactly it- but the point is I was using an unmodified key. I've tried this on higher-end tumblers and I could really feel that it wasn't going t

Yeah, that's exactly it- but the point is I was using an unmodified key. I've tried this on higher-end tumblers and I could really feel that it wasn't going to work. It's just about the el-cheapo builder-grade locks (which comprise a shocking percentage of home and apartment locks).