Gentlemen....
Why don't you guys do it the easy way and just plot from compufoil??
You can downloat the airfoil coordinates from the Mike Selig site, import
them into
compufoil and plot them at any chord length you desire.

http://www.compufoil.com/compufoil.html

http://www.aae.uiuc.edu/m-selig/

Scott Correa