I agree with EddieSpecMiata. Great build, just missing 2x hill crests. One between turns 2 and 3 (big enough to make the entry to 3 blind) and one between 5 and 6 (smaller, but enough to unsettle the car as you are trying to turn left). I think those two little hills add a lot to the challenge of this circuit and it would be great to add them. Otherwise, thanks so much for building this! It's great to practice as I'm driving here this weekend!