Hi there,
Basically I purchased the NN3 MKII to use it with my canon 20D. I found a little problem about the way the camera's body while turning catches the "Lower Rail Brass Screw" to shoot upward. But this little concern became a problem with the Canon 7D which has a bigger body.

Anyone knows how to overcome this problem without of course switching to NN4? Are there any kind of accessories available to extend the size of the vertical rail?

Thanks...