Issues with a Projected Curve

I am doing an Audi R8 tutorial for uni and have projected a curve from two sketches on two seperate planes. The curve comes up short on one end of the model and I have no idea why, I have followed all the steps and have also gone back and re-done it to see if I had done anything wrong, I have noticed other people have had the same problem too. here is what the curve looks like and it is just short of the line. http://www.hostingpics.net/viewer.php?id=6335341801.jpg

SolidworksSurfacing