Welcome to the RCU forums, lighthouse2009!
It seems to me that the airfoil of the model does not correspond to any of the NACA airfoils.
Good reading about NACA numerical systems:
http://www.aerospaceweb.org/question...ls/q0041.shtml
You can find many airfoils here:
http://www.profili2.com/
(On-line airfoils)