The cylinder stop on my recently acquired 14-3 is popping up prematurely and stopping the cylinder. When cocking the hammer in a normal fashion, or pulling the trigger at a normal rate, the stop drops down, but immediately pops up before the cylinder rotates. If cocking the hammer or pulling the trigger very briskly, the cylinder revolves quick enough that the stop doesn't catch in the cylinder slots, or cutouts.

I have a new cylinder stop and spring I ordered from Midway.
Will replacing these parts probably cure the problem? The Kuhnhausen Manual says

"If the bevel point is too short . . . . It may return too quickly. Instantly in some cases, jamming the action, making cocking impossible. This stop is ruined!"

This sounds like what is happening with my revolver. When cycling the action with the cylinder open, I can see that the stop drops as it should,
but immediately pops back up, but then drops back in the window as it should.

I am not a gunsmith. I can replace springs, and detail strip for cleaning and get everything back together. Is this something I need to tackle, with a reasonable expectation of success, or should I just pack it up and send it to S&W?

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Georgia On My Mind

To properly fit a cylinder stop, there are certain areas that may need to be stoned. If you haven't been trained, at least, as a S&W revolver armorer, take the piece to someone who knows what to do.

The stop is not a "drop in" part, so will need to be fit properly to the hook of the trigger, and, the ball of the stop will need to be fit to the cylinder stop slots.
Since you are not familiar with fitting these components, I would seek out a qualified gunsmith in your area. Smith and Wesson would likely do the work for you also, if you don't mind sending the gun back.

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Ret. LE, FA Instr, S&W Armorer