Superelevation Control

I am using horizontal alignments to control the horizontal location of my median and edge of pavement curbs.  Everything seems to work fine until I add superelevation control the the edge of pavement pivoting about the centerline.  I used a single control line to create the super.  After the super is added my left edge of pavement (which is the location of the super control) is not stretching correctly and even crosses the centerline.  Any thoughts on what is causing this?  I have double checked my point controls and everything seems to be OK.  I am using Inroads XM.