Another thing to note with re-gearing is that if you up the ratio (4.56, 4.88 etc) there is less 'meat' on the spider gears that can make them more prone to damage.
I destroyed my d30 front spider gears recently running 4.56 ratio, 35's, diesel manual. I had the 'upgrade to 44 or fix the 30' conundrum situation recently. I wanted to change the gearing to 4.11 anyway, so decided to do that obviously doing the rear at the same time. If it goes again in the front I'll be upgrading to a 44 for sure with 4.11 gearing to match the back which is now done. It's an expensive operation ($8,600 I was quoted fully installed prorock 44) but is worth it if you wheel hard I believe.
My front d30 is about as strong as you can get (gusseted, dynatrac ball joints, locked etc), but in my experience, you are only as strong as the spider gears. As noted, taking it easy on the skinny pedal obviously helps this! Diesel's have more torque too which probably puts more stress on the spider gears that a petrol.
This is what you don't want to happen which happened to me...
spider gears are the smaller gears inside the diff carrier in an unlocked diff
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