Yes, they cannot be described as anything but functional! I've got a few of the S&K mounts here but have never fitted one oddly enough. You could reproduce it in steel with some lightening holes and cuts probably.
The problem is of course that the surfaces it is attached to on the charger bridge and receiver ring are not consistently surfaced/located, with the possible exception of the inside faces of the charger bridge.
And as Brian said, the wood needs to be relieved.![]()