I've never needed something like Xfoil either. So far... I'm really, honestly confused as to what approach you're using to define an aircraft's lift performance in FS. Since I've never found a reason to do most of what you're doing... either I'm missing something... or you are??

The attached figure gives an example of variation of aerodynamic characteristic for an aerofoil. http://www.nrel.gov/...5osti/36336.pdf The variation is relatively small, and becuse Reynold's Number varies with speed, air density and air viscosity there isn't a single value for an aircraft. As a result there is no point in being concerened about it - especially in view of Flight Simulator's limitations.It's very easy to get carried away in seeking accuracy and precision in the input data - I know because I have done it myself! Flight Simulator is basically a 6-degree-of -freedom linearised model. The only aerodynamic derivatives that are not linearised are lift and pitching moment. This introduces inaccuracies. Also in many cases, real-world data is just not available. The art in making a good model is to use values that gives the expected results in flight.