Well this has been a hard task. But I have 1 mount, on the rail, fully functioning.
This one, a complete one from Tommy M.
Only problem, the bottom jaws were not wide enough to go on the rail.
So I ground it open. Clamp part and bottom L.
It now works. Not as clean as I would have liked.
I have one more partial thanks to Tommy.
But I need 1 more L, the Large size.
The L with the teeth both sides, see pic.
Apparently some of these mounts are 30 percent smaller.
I need the Big size.
Thanks to All SA