Have any of you seen anything like this before? I asked Steve Pipestud since I got it from him and he says he didn't even notice since he "sees so many of them" and called it a "looped stem". I call bullsh-t. Looks like someone filed a notch on either side of the button and there is no mention of this on pipedia or any other GBD I've ever seen online. Plus, what could possibly be the purpose of this extra "manufacturing" step?