Can you please share an example where we can compare the obtained xy layout? I would do it myself but I dont know any laser scanned track for rF2 which I could use. In my case the only real track I have modeled is OcioKart which is available as a WIP project for rF2. I stopped working at it until I could find a way to get proper elevation. My track is completely flat because I cannot find a proper way to do this. However, I have never noticed differences in XY between the real track and the virtual one. For all my other fictional tracks I certainly don't have this problem.