Those are great... i use them too. I just wanna say, they WILL wear out... especially using the thick aluminum CVD bones. The pin on the CVD bone will wear as well.
Driveline slop will get worse, and can make tuning the suspension a pain. You will chase what you think is an inconsistent setup or bad tires, when its driveline wear and tear. A fresh driveline in a Tc3/4 is its greatest asset, its razor sharp response is what makes shaft drive so awesome.
For a cheap alternative to buying new aluminum CVD bones due to pin wear, buy the less expensive 4 pack of the Tc3 plastic bones. Press out the pins in the plastic bones, and put them in place of the worn pins in your aluminum CVD bones.