While I have never seen a Young key fail, I also see almost no Young carriers in guns to begin with, so statistically it's irrelevent.

What I HAVE seen is locktited carrier key screws loose enough to allow gas-leakage and/or shear off. I have also seen castle nuts back off of guns with blue locktite underneath them.

There is nothing wrong with doing something a different way if that different way is better, but most people seem to prefer different for the sake of different, or different out of obstinance whereby they stick to doing something wrong because to change would admit that they were doing it wrong.

The idea of red loctite on the carrier key screws is very odd. That carrier is known to get a little warm, and heat breaks down red loctite.... Strikes me that rockset or the Young method would be better.

Or you could just, you know, stake them like they should be to begin with.