mesh interfering with the airfoil
 

I am trying to mesh NACA0012 with a modification of added flap. after i used sizing and refinement to concentrate the cells around the airfoil the mesh cells overlap my geometry as you can see in the picture. I was wondering if anyone could help me fixing it?
http://www.cfd-online.com/Forums/att...1&d=1369478297

Regards
Hooman
hooman.abbasi@estudiant.upc.edu