Thanks Yannick. I have changed the configuration of the outfield section (I felt is was a bit left-right-left-right before) and there is now a faster run to rejoin the oval, which I like. I also adjusted the infield section slightly to remove the chicane and make the entrance to the tunnel safer. I moved the chicane down to the apron near turn 1 so it does not have to be run.
Oh, and I kinda figured out the banking too!
I dont think Im gonna do any more on this project, but let me know what you think