So I finally got around to upgrading my front axle to a modified steel one, after breaking numerous fronts. Since this, my first wheeling weekend I decided to push it father, well basically it was pushing me father because of the new frt locker.....ironically I broke a rear axle.

I knew it would happen eventually. I am running aggressive 33" tires, spool, and 4:1s. I limped it out of the woods to fix it. Unfortanately when I took it apart I noticed that it sheared right next to the spool. Then it ended up damaging the carrier, and chunks look like they got into some gears after the side retainer was backed out by the rotating bad axle.

I have a few spares and plan to swap a 3rd member and axle out. But I figured I'd get some feedback for future scenerios....I'm sure ppl on here have broken rear axles.
1. Is the damage to the carrier something to be suspected? (Ie- if I break an axle should I be looking at a new third everytime) (-this seems like a hassle)
2. Is it worth investing in Calmini Axles? Or is an axle swap better? (ie 9")
I have seen that sami owners sometime upgrade to this axle, and have also seen the Hagen articles were he upgrades to a 9". So I'm assuming 33" must be pushing the limits on this sidekick rear, and wandered if I should be buying tons of spares or start looking at upgrade options......Any input or feedback is welcome.