I've never bought a lens plate before, but I just bought a Kirk lens plate for the Micro-Nikkor 70-180. The plate comes with the one big screw that's obviously for attaching the plate to the tripod mount - but it also comes with these two tiny little screws. I have no idea what they're for! There are small holes at the front and back of the plate, and the screws would fit in there - but I'm not sure what the utility of these holes + screws are. Can anyone offer any guidance on this? I can certainly write to Kirk and ask; but I'm a bit embarrassed that it might be a really obvious answer that I'm somehow missing. I guess I'm more willing to embarrass myself here, where I'm quasi-anonymous. Thanks!