This is the second time this has happened within the last 3 months.
Dana 30 front
Upgraded Yukon axle shafts and ring and pinion (same material, not chromoly)
Installed by a reputable transmission shop so I'd hesitate in saying they didn't know what they were doing when they installed it.
I understand that I'm running what is considered the max tire, however, with the upgraded axle shafts and ring and pinion working in conjunction with each other I'm a little shocked that it happened again. Also, the shop mentioned that having the auto locker in there adds a good amount of stress to the front diff. Is this true? Enough to be catastrophic?