If you crack the front shocktower and/or the upper bulkhead, you probably crashed in a way that would break any car. I've only seen one shocktower go all season. The Cat seems pretty strong in that area.
The old type outdrives can break if you don't use uptravel limiters and put the diffs in the "low" position. I've used the old outdrives for about 6 months before I broke the rear outdrive at the Belgian GP. Since I replaced them with the new ones, I never had a problem again. Contact Schumacher and ask for a replacement.
I'm surprised you have so much problems with the kit bearings. They are pretty good (especially compared to 90'ies Schumacher bearings in my old CAT 2000
). I only had one rear wheel bearing go when I tested the arm/shock reverse kit. I'm guessing because of the extra stress on them caused by the increased driveshaft sweep. But those bearings were about half a year old and had already seen considerable abuse.
I even find the kit bearings more reliable then the ceramic option set I installed about 2 months ago. The ceramic bearings had less tolerance to dirt and have to be cleaned regularly.
And yes : we also run on dirt and clay