This past race, I managed to sheer off one of the spool outdrive cups, which took out one side of the pin on my nice CV universals. Luckily I had a spare cup and swapped back to the stock universals. I'm not sure when it happened, but I think it was after a pretty hard hit-and-roll. I feel bad for how much abuse I put this car through
On that note, I decided not to buy a new aluminum steering rack this season, but I was able to eliminate some of my steering column slop by shimming under the cross-member piece (where the servo turnbuckle attaches). I have 0.03 mm under one end, and 0.04 mm under the other (7mm shims I believe), right beneath the ball bearings. That made things a lot better. There is still slop around the main bearings (which ride on the aluminum posts), so I may try the CA glue trick there.
I'm also going to change wheel bearings for the new season, as those are sloppy from all the hits.