The tool has to be pretty stiff to pop the latches- that's why I used the hanging folder rod. I guess that's why the GTI guy ground down a knife. I don't think the slot/angle means much- I was basically pushing it with a square face. (Hey, I could be beating the hell out of the mechanism with it, but I'm counting on not having to pop the radio very often.) I just shoved straight back, you can feel the latch go- then you work the side out, make sure the other side is loose...