At that time I said no more Z's for me but I had a new one by October. I not ready to return to the track but I may do so eventually.
I'm seriously considering adding traction control to the Z, I think there's a device called racelogic. Anyone have any experience with it?
For some reason the Z seem to have a tendency to spin and it's really hard to recover from a spin. Perhaps shifting some weight to the rear would help. I'm thinking battery relocate at the least.