Hello all ,  I am having an issue with using the Split Line tool.  The task that I am trying to complete is to split an airfoil along the lading edge so that I can apply a force to just one side of the airfoil.  There is twist and change in cord length associated with the airfoil, so placing a split line on that leading edge is proving to be very difficult.  Any help would be appreciated.  I am using SW 2012 by the way.   I have included an image of the foil that I am trying to split.  Any sort of help would be greatly appreciated