Just some other feedback for you - don't get me wrong your work is great, but I can tell you that, in standing by the side of the track for weeks at a time, the elevation changes are wrong - from memory there are no real changes in elevation - the track is pretty flat - though there may be a slow, gradual incline from one side of the track - the start finish straight is maybe 10 foot lower than the back straight.
I am going there again on Saturday so I will make a mental check for you.
Great work though!
Lee