George, Awesome to hear you got your chassis for GT2. Look forward to running with you. I only run 32's during the first heat then switch to 28's for the second and main. But that is me. Would be interesting to see how it acts using the setup Brian posted.
As for breaking blades on the new car I have only broken 1 and that was when I broke the whole corner off the car. Other than that haven't had an issue with them. My first Worlds car was a different story. Seemed to break them every 3 heats.
Jason