contact pattern

The sleeve can't crush more, the forces on the pin aren't squeezing forces, they are pushing and pulling, or trying to kill eachother forces.

The instant you start using your new set up diff the preload will change by as much as 6" lbs to 11" lbs as the bearings run in.

Under load the pin is trying to remove itself by shooting forward (watch when the 9" fails what it does), so it is relieving the pre load, under decel the ring is trying to eat the pin and send it out the cover, pulling on the front bearing, again relieving pressure, there is never any crushing force on the crush sleeve again after you put the socket and breaker bar away.

There is only loosening happening from there on out, if IF the preload is not set properly (which is the reason for that failure) when the bearings run in and get to the desired preload it will be to light and then the bearings will be getting beat up and then they will fail.

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