Hi all there
My name's Davide, i'm from italy and i'm a new customer. Recently i bought a NN5 with RD12 and EZleveler.
Today i've setup my equipment, and i found these values:

Sony A100 + sigma 12-24 @ 12mm:

Lower rail: 47 mm
Upper rail: 104 mm

If there's another guy with the same equipment i'll really glad to know values he founded.