Sorry for your loss. That is the number one issue with that pair. From what I understand those are not screws, the only look like them, the really pins. Maybe you can confirm?
Definitely a screw, small sleeve is in the CF which receives the screw.
I feel your pain. I have a pair that look quite similar. Bit of a "redneck" fix, but I used a drop of superglue to mount the screw back into the lens. It worked!
It tore the screw sleeve right out of the CF, if it did hold it wouldn't hold for long.
So whats the cost to have them fixed? Something astromical by oakey?
Not fixable, they are a write off.