As you move weight back, it stiffens the spine, the same as decreasing point weight. So you have an 11 grain actual weight difference, plus whatever the effect might be of moving the weight back. I'm sure you could see the difference if you compared bare shafts with both configurations. Ideally, if your bare shaft was a little weak with your first configuration, this would move it in the right direction. If your bare shaft was a little stiff, this would move it further in the wrong direction. Whether it will make enough difference with a fletched shaft to bother you is something you'll have to observe for yourself.