How do I handle tough, unusual locks?

You can handle most locks now, but the high-security and the unusual ones still stump you, and that is the natural edge of a craft like yours. The everyday locks yield to skills you have drilled into your hands. The hard ones are hard on purpose, built to resist exactly what you know, or so rare that no routine covers them. Being stumped there is not falling short. It is meeting the locks designed to stump.\nWhat moves you past this edge is patience and study rather than force. The people who master the difficult locks slow down. They learn how a particular mechanism actually works before touching it, they feel for what it is telling them, and they accept that some take far longer than a standard job. The unusual lock rewards curiosity, not speed. Treating it like a puzzle to understand, instead of a wall to break, is the whole shift.\nNext time an unusual lock stumps you, if the situation allows, stop working it and first learn it, look up the mechanism, understand its design, then come back. And build your knowledge on purpose between jobs, studying one kind of high-security lock at a time. You cannot master the hard ones in the panic of the moment. You master them slowly, in study, so your hands already know them when they appear.