trailing edge not snapped perfectly..
 

Hi,
I was trying to mesh an airplane without tail in SHM. It takes long time for complete the mesh also the trailing edge is not snapped.. so How can i snap is correctly, my supervisor says to use curvature base control but i dont know how to use it since i am new to OF. I cannot add layers also.. please help.. i have attached pic of trailing edge of the wing and SHMD file