I recently acquired an early Python. First thing I noticed was the crane (yoke) would tend to drag while in the process of opening. So, removed the lock screw and what I found doesn't look like any Colt crane detent I have ever seen, but then I have never disassembled an early model. My question is, has the detent ever changed shape? The one in question is more like a pin (no hollow in it at all), couldn't be farther from the detent I expected to find.