I have recently purchased a Nikkor 450M lens in Copal #3 shutter and a Linhof Tech IV/V lens board which has a 54mm off center hole. I plan to redrill for the Copal #3, which, according to the chart on this forum, requires a 65mm hole.
The bottom of the existing hole is 7mm from the bottom of the 80mm diameter inside ring (light trap).
If I drill a new hole with the bottom of the new hole in the same place as the bottom of the old hole there will be 8mm at the top and 7mm at the bottom. Is this OK, or should I place the new hole lower?
Or, perhaps a simpler question is; does anyone know how the hole is placed in a Linhof board predrilled for a #3 Copal shutter?