Have you looked at the suspension at full droop and full compression to see if the CVAs are binding on anything? I would suspect that's the case, and if so, new CVAs will either bend, or break whatever is causing the binding. Before upgrading or installing new CVAs, I'd see if you have a binding problem first.
That said, I haven't bent any CVAs, but I haven't spent much time on a track, yet.
I'll check that out, but I don't think that's it. I bent my first in my new RC8T on the first day out with it at the track.