Dennis,
Like the others, I too admire your work. I hope I'm wrong, but from the photos of your clawmounts, it seems you are preparing for a wedge shaped "slider". The notch in the "hook" should be parallel to the slot in the base, and about the width of a scribe line above it. The "slider" should then be fit to the "hooks", by spotting and filing the bottom (insuring it too is parallel, except the leading edge, which is tapered to "cam" it back when setting the scope in. The bottom leading corner if the "hook" would be filed to match) of the slider to fit the notch. This draws the mount down into the base and positively takes all the up and down "play"( the Germans say "luft" or air, when they mean space or play)out of the connection. If you take the "slider" out of a rifle that had claw mounts fit up in Germany, you will see two small filed areas on the bottom side, where it was fit to the "hooks". If you are fitting mounts to an older base, it may be necessary to make or buy a new slider bar, to have enough material for proper fitting.
Mike
